Hopeful.
Why because Enthusiastic can be describe as eager or enjoyment, interest or approval.
neutral connotation
A neutral connotation has neither positive/negative attachments associated with it.
Answer:
It provides a detail showing one way the Great Firewall works.
Explanation:
Increased literacy was the social change most closely related to the perceived need for standardization.
If people weren't increasingly literate at the time, they wouldn't have felt the need to standardize the correct usage of the English language.
The standard American musical comedy includes a recapitulation of the melody of every one of its major songs at the end of the production.
So therefore your answer would be B.