Which interrogative pronoun best completes the sentence? how is the pronoun used? shirts are still drying on the clothesline? a. whom; object of a preposition b. whose; possessive c. whom; direct object d. who's; subject (in a contraction with a verb)

The answer is B. Whose.

Because A. and C. don't make sense and D. is a contraction. If you used D. it would be like saying "Who is shirts are still drying?" and that doesn't make sense either.  

Whose is used because it is possessive. Your asking "Whose shirts?" The shirts are owned by someone.

it can be many reasons such as they could want they're family to live and explore more two. might just want to be nice.

3.some say for the greater good or future.

4. they might want to have they're baby,kid,family explore more. people just sacrifice.

true fact:

someone is sacrificed everyday.