Municipal sidewalks are commonly placed using a workable, moderately stiff concrete that can be finished and edged without excessive segregation or bleeding. Typical sidewalk mixes target a slump that provides enough workability for placement and finishing while remaining stable in thin slab applications. Civil engineering materials references describe slump as the standard field measure of fresh concrete consistency and note common target slumps for typical flatwork are often in the mid-range rather than very low (hard to place) or very high (risk of segregation unless admixtures are used). In many municipal specifications and standard practice for sidewalk flatwork, a slump range around50-100 mmis commonly used, balancing finishability and quality. Therefore, among the choices,50-100 mmbest matches a typical municipal sidewalk slump range.

Concrete compressive strength is determined by loading astandard molded specimento failure in a compression testing machine and calculating strength from the peak load divided by the specimen's cross- sectional area. The common acceptance specimen for cast-in-place concrete is acylinder, produced and cured using standardized procedures to ensure that test results reliably represent the delivered concrete. Civil engineering materials references describe compressive strength testing as the principal measure used to verify compliance with specified strength (f'c), and that cylinder specimens are tested in compression to determine the maximum stress sustained.
A slump test measures workability/consistency, an air test measures entrained air content, and sieve testing measures aggregate gradation-none of these directly measure compressive strength. Therefore, the required test for compressive strength is thecylinder test (Option B).

The subsurface profile indicates a weak/unsuitable bearing stratum extending several metres below the proposed founding level, withcompetent bedrock close beneath(shallow bedrock at about 5 m). Shallow foundations (slab-on-grade or strip footings) depend on adequate near-surface bearing capacity and acceptable settlement; with unsuitable soils to 4 m, shallow options would risk excessive settlement or bearing failure unless major ground improvement is performed. Where a strong bearing stratum such as bedrock is available at practical depth,end-bearing pilesare commonly selected to transfer structural loads through weak soils and seat on (or be socketed into) the competent stratum. Engineering references define end-bearing piles as piles driven/drilled to a firm layer/bedrock so that axial load is carried primarily inend bearingrather than relying on skin friction in weak compressible soils. With shallow bedrock, end-bearing piles provide a direct and reliable load path and reduce settlement uncertainty versus friction piles in poor soils.

At-grade intersection design is governed by how vehicle paths interact-i.e., the fundamentalconflict types and maneuver classes that must be accommodated by geometry, channelization, and traffic control. AASHTO' s intersection chapter explicitly categorizes vehicular conflict points and illustrates them using the maneuver typesdiverging, merging, and crossing, and it addresses how turning movements create and interact with these conflicts within the functional area of intersections.
In addition, AASHTO describesweavingas the condition where one-way traffic streams cross bymerging and divergingmaneuvers-another key operational behavior that affects design and level of service.
Putting these together, the five maneuvers a technologist must consider in intersection design arediverging, merging, weaving, crossing, and turning, which corresponds exactly toOption B.

Compressive strength is a hardened-concrete property verified by testing a standardized specimen under axial compression until failure. The standard field practice is to castconcrete cylindersfrom a representative sample, cure them under specified conditions, and test them in a compression machine at required ages (commonly 7 and 28 days) to confirm the concrete meets the specified strength. Civil engineering references describe that the compressive strength is computed from the maximum load at failure and the cylinder's cross- sectional area, and that cylinder testing is the accepted quality-control/acceptance method for structural concrete.
Slump testing only indicates fresh concrete consistency, air testing addresses durability-related air entrainment, and sieve testing applies to aggregates rather than hardened concrete strength. Thus, the correct test to determine compressive strength is thecylinder test (Option B).