I would say the 1st one is the only one correct. The 2nd one should be who, the 3rd one should more and likely be whom, and the last one should probably be who. I don't know if I'm 100% though. I hope I helped.
<em><u>B</u></em>. Is capitalized correctly because when you are capitalizing songs you don't include the words like "the, if, or, etc" so you just use the process of elimination.
1. B) given
2. A) take. This one is a bit tricky, because if only "taked" was underlined, the correct version would be 'taken'. But if "have taked" is underlined, 'take' would work the same as 'have taken'.
A. they knew how to mummify their dead :)
In this text, you are informed on what the term "Sandwich generation" means. You are then provided an example (2nd sentence). The example can be found when the transition word <em>for instance</em> is used. From this information, you should be able to conclude that the correct answer is a. definition and example.