It is whom. You can only use who if you can replace is with he or she.
Your answer is A I remeberthis story quite well. :)
I think it would be ‘problem and solution’ but i haven’t read the article because it isn’t linked. however ‘problem and solution’ does sound like it would fit best :)
When writing a claim you need to take a stance on a particular issue. In this case the issue is whether or not "standardized tests are the proper measuring sticks for student performance." This stance should be the first part of your claim. Then follow it up with "because..." and your three reasons.
For example, Standardized tests are a proper measuring stick for student performance because they can test a student's knowledge on a wide range of subjects, they are the same for everyone, and they are an accurate indicator of how well a student will do in their future studies especially for fields like medicine and law.
