The Commencement Date is a critical contractual milestone that triggers contractual obligations including the start of time for completion. For clarity and enforceability, it must be specified clearly in contract documents forming part of the formal contract. The Contract Agreement (Option B) and the Particular Conditions (Option C) are the standard places to unambiguously specify the Commencement Date.
Minutes of meetings (Option A) or emails (Option D), while useful for informal communication, do not have the legal certainty or binding contractual effect unless expressly incorporated into the contract documents.
Therefore, specifying the Commencement Date solely in meeting minutes or emails is not advised for clarity and risk mitigation.
References:
FIDIC Red Book 1999, Sub-Clause 8.1 - Commencement of Works
FIDIC Contract Manager Study Guide, Module on Contract Formation and Execution

Under FIDIC Red Book and Yellow Book 1999, Sub-Clause 14.3 [Application for Interim Payment Certificates] governs the Contractor's obligations when submitting statements for interim payments.
Option B is correct because the Statement must include amounts relating to Provisional Sums where applicable. These sums form part of the Contract Price adjustments and must be reflected in interim applications when instructed or executed.
Option C is also correct. Sub-Clause 14.3 explicitly requires that each Statement be accompanied by supporting documents. This includes records of progress and, importantly, the progress report under Sub- Clause 4.21 [Progress Reports], ensuring that the Engineer can properly assess the value of work done.
Option A is incorrect because FIDIC does not mandate submission "in five copies" nor submission directly to the Employer; typically, submissions are made to the Engineer, and the number of copies is not fixed in the General Conditions.
Option D is incorrect as stated. While Plant and Materials may be considered under Sub-Clause 14.5 [Plant and Materials intended for the Works], their inclusion is subject to specific conditions and certification, not simply "added and deducted" generically within every Statement.
Thus, the correct application aligns with procedural compliance, proper substantiation, and inclusion of relevant financial components as per Clause 14.

Under FIDIC Red and Yellow Books (both 1999 and 2017), once a Section or Part of the Works has been taken over by the Employer, even if a formal Taking-Over Certificate has not yet been issued, the practical effect is that the Works (or relevant Section) are considered completed and under the Employer's control.
Clause 13 [Variations and Adjustments] allows the Engineer to instruct Variations only before the Works or a Section are taken over. After taking-over, the Contractor's obligations shift from execution to remedying defects under Clause 11 [Defects Notification Period] . At this stage, the Contractor is no longer required to carry out new work beyond rectification unless separately agreed.
Therefore, once a Section/Part is taken over, the Engineer cannot instruct a Variation to that part of the Works. Any further work would require a separate agreement or contract, not a Variation under Clause 13.
This reflects a key FIDIC principle: Variations relate to the execution phase, not the post-completion (defects liability) phase. Thus, the statement is false.

Option A is NOT correct because the wording of the Letter of Tender is usually governed by the tender documents and contract terms; it is not solely at the Contractor ' s discretion to dictate when the Contract becomes effective. The standard process is that the Contract becomes effective upon the Employer's issuance of the Letter of Acceptance.
Options B, C, and D correctly describe standard FIDIC practices.
References:
FIDIC Red Book 1999 & 2017 Editions - Contract Formation and Tendering
FIDIC Contract Manager Study Guide, Module on Contract Formation

The FIDIC Red Book (2017 edition) is traditionally used for construction contracts where the Employer provides the design, and the Contractor primarily executes the construction works. This form is suitable for Employers who have detailed and well-defined design and engineering requirements and want to retain control over the design.
* TheRed Bookis ideal for experienced Employers who have a clear and fixed design and require the Contractor to build accordingly.
* TheYellow Bookis typically used where the Contractor is responsible for both design and construction (design & build). It suits Employers who want to delegate design responsibility to the Contractor.
* TheSilver Bookis used for turnkey or EPC contracts where the Contractor takes full responsibility for design, procurement, construction, and commissioning, suitable for Employers seeking minimal involvement in design and execution details.
* Hence, for an Employer whoknows exactly what they wantfrom a design and engineering perspective and wants to maintain control, theRed Bookis the first and most appropriate choice.
References:
FIDIC Red Book 2017 Edition - Conditions of Contract for Construction
FIDIC Yellow Book 2017 Edition - Conditions of Contract for Plant and Design-Build FIDIC Silver Book 2017 Edition - Conditions of Contract for EPC/Turnkey Projects FIDIC Contract Manager Study Guide, Module on Contract Selection