The boldface verbs in the sentence use indicative mood. Since the interrogative mood of a sentence always asks a question, we can change the statement “Tom will have a moment of great inspiration” into a question. To do this, we can flip the helping verb, which in this case is will, to the front of the sentence so that it now reads “Will Tom have a moment of great inspiration?” This sentence now asks a question, therefore it now uses interrogative mood.
Answer:
The main idea of the text is to show the origin of the ban on child labor.
Explanation:
The article aims to show the origin of child labor prohibition laws in the USA. This is because the drafting of these laws allowed children to be free from abusive work, which prohibited them from living a normal childhood, having quality education and being protected from abusive situations and accidents, since children do not have the mental capacity that a adult owns.
The answer is D.
"Keep", "factor", and "calculate" are all verbs in the list of things the new system allows teachers to do. The other sentences are inconsistent with their list of verbs/adjectives/nouns. Thus, option D is the only one that is grammatically correct.
I am not too good at explaining, so let me know if you are still confused.
Hope this helps! :)