Problem: Here's a question: Sitting to close while watching TV can cause what sort of pain?  Here are possible answers to this question: - brain problems - laziness - get fat - headache - laughter  I believe the correct choice is "headache", here's why:

A: a headache is pain


Problem: Here's a question: What does a head attach to?  Here are possible answers to this question: - submarine - human body - ship - neck - morgue  I believe the correct choice is "human body", here's why:

A: head of human body


Problem: Here's a question: Awaking in the middle of the night may cause what?  Here are possible answers to this question: - depression - irritability - shock - discomfort - alertness  I believe the correct choice is "irritability", here's why:

A: reasons, symptoms, & causes of irritability


Problem: Here's a question: where do you use medical instruments primarily?  Here are possible answers to this question: - laboratory - the pyramids of gaza - music shop - operating room - case  I believe the correct choice is "operating room", here's why:

A:
surgeons use instruments to perform operations.