Which of the following process areas is a TMMi level 3 process area?

Which of the following process areas is a TMMi level 4 process area?

Test Planning is defined as one of the process areas at TMMi level 2. It introduces practices such as product risk assessment and defining a test approach for the project. Process areas at higher TMMi levels build on these practices and also address product risk assessments and/or defining a test approach.
Which of the following TMMi level 3 process areas most strongly built on the practices and experiences of Test Planning at TMMi level 2?
1. Test Organization
2. Test Life Cycle and Integration
3. Non-Functional Testing
4. Peer Reviews

What is the correct order for the following TMMi maturity levels (from low to high maturity)?

Which of the following is a typical business reason for starting a test improvement program?