I am pretty sure it would be massive because it is an English question. If you are doing a multiple choice question you should see which one fits the best. If could also be positive impact.
Me
You are talking about yourself and the sentence is structured to include me. My in those sentences just sounds wrong.
The answer is it make people more productive
because they could see and work better at night.
I hope this will help u
Modal helping verbs can be used to indicate a mood or tone of a verb in a sentence.
A modal assisting verb affects the main verb in this sense by expressing necessity or possibility. The modal verbs include can, could, may, and might. Modal verbs, often referred to as modal auxiliaries, are used to express the concepts of capability, likelihood, necessity, permission, and duty. These verbs never change their form.
An auxiliary verb known as a modal verb is used to indicate modalities, which are the states or "modes" in which a thing can exist. Examples of modalities are a possibility, ability, prohibition, and necessity. The modal verbs should, must, will, might, and could are a few typical examples.
Modal verbs are most usually employed in academic writing to denote logical possibility and least frequently used to denote permission. For each of the eight tasks that modal verbs can serve in academic writing, they are enumerated and ranked from strongest to weakest.
Learn more about modal verbs here:
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