Answer:
C is the option.
Step-by-step explanation:
For this question, it is necessary to look at two aspects: the familiarity the playwright must have with many people (stated at the beginning) and that the characters born of the poet's brain. So, it means that a) the playwright must be familiar with all situations and people and b) due to this experience, the playwright is able to create reliable characters and that without it, actors would not have good characters to portray.