Here's a question: When one wishes to analyse a subject you must do what at great length?  Here are possible answers to this question: - look at - use calculator - come to conclusion - learn new - think about  I believe the correct choice is "think about", here's why:
Ans: rivers flow trough valleys.

Here's a question: It turned out it wasn't a kidney stone, what might it have been a stone in?  Here are possible answers to this question: - gallbladder - creek bed - driveway - river bed - gravel  I believe the correct choice is "gallbladder", here's why:
Ans: kidney is a organ

Here's a question: What do you need to write a letter?  Here are possible answers to this question: - have paper - literate - not give up - move fingers - to keep warm  I believe the correct choice is "have paper", here's why:
Ans: you need to write a letter have paper.

Here's a question: Playing piano and other creative activities need what?  Here are possible answers to this question: - make music - inspiration - musical sounds - making music - dancing  I believe the correct choice is "inspiration", here's why:
Ans: creative activities require someone to be inspired to be creative