I would say that if a reader understand an author's culture it helps the reader understand what the point the author is trying to make.
It is considered a sin to kill a mocking bird
The correct answer is 'present, third person singular'.
Infinitive would be - to ask.
Past tense would be - asked.
Present participle would be - asking.
Rainsford is adventurous and knowledgeable about the outdoors.