How many meanings does the word pretty have? what are they? how is that meaning different from today's use? which part of the dictionary entry did you use to find the answer?

The word "pretty" has several meanings, those being: attractive in a delicate sense, ironic expression of annoyance or disgust, a fair degree.  Today, however, the word "pretty" is generally used to compliment a fairly attractive person.

Explanation:

Hi, the above answer is the explanation you are looking for.  You would find the various definitions of the word "pretty" in its numbered list of definitions, the most common definition being listed first.  

the correct answer can either be a or b because it could be both but you should probally choose b

they should gives us more chances to make friend and do stupid things