Question

Imagine that you are a study habit expert. Your class has a test and one of your classmates comes to you with a problem. Her family has noisy houseguests visiting that week and she can't concentrate on her studies at home. What would you suggest to her?
She should take her books and go to a local library to study.
She should make a study date with her other classmates at a café.
She should use earphones to drown out the noise at home while studying.
She should wait for the houseguests to leave and then study later in the week.

Answer 1

start by ruling out the obviously not smart study ideas
this leaves us with the first three
then rule out the inconvenient ones
this leaves us with the first and third one
after that rule out the noisiest study idea
that leaves you with the first option

the answer is 
She should take her books and go to a local library to study.