Aperson who can imagine the experience of someone else's emotions has what ability?
a. discipline
b. empathy
c. optimism
d. motivation

B. Empathy.

Discipline means training someone to obey a certain law or rule.
Optimism is like being hopeful about something that might not necessarily be realistic.
Motivation is like the reason for doing something; a motive.

This leaves empathy. The definition of empathy by dictionary definition is 'the ability to understand the feelings of another' 

empathy

Explanation:

empathy means you have the ability to understand and share the feelings of another.

I believe the answer is verb.

Explanation:

Opening is an action so it is a verb. hope this helps.