Pretty sure the antecedent is B. twins.
free verse.,.,.,.,....................................
The apostrophe character is a punctuation mark, and sometimes a diacritical mark, in languages that use the Latin alphabet and some other alphabets. The word apostrophe comes ultimately from Greek.
Here are some explain of limitations
What are the examples of limitations as a person?
You do not love (or sometimes even like) everyone you are supposed to serve.
You will not be able to save everyone.
There is never enough time.
There will always be things about your work and the people you work with that cause a strong emotional reaction.
