Answer:
The title often suggests the message the author wants to send.
Explanation:
the title does not always include the names of main characters, and you obviously cannot tell what to expect from the plot or the tone of the work by a title, so the answer is the title often suggests the message the author wants to send.
A Subject verb disagreement is when you use the plural-form of a verb for a single form noun: Example: "the fox play" is disagreement because the plural form 'play' is used for singular noun fox.
If you accept either C or D as the correct revision then you have to accept both of them. Hence the best way to treat the sentence is to ignore both of them.
B is not correct either. You can over punctuate.
That leaves A.
Sometimes the right answer to many things is to do nothing. My dad used to say "Don't fix what isn't broke."
A is the answer <<<<<
