The correct answer would be helping verbs. The helping verbs are combined with the main verbs to indicate time, possibility and other kinds of meaning. The helping verbs' function is to help extend the meaning of the main verbs by adding more detail on it. Helping verbs are very essential in the formation of different tenses of the verb.
The underlined words are : "allay the discontent". To Allay means to enervate or reduce. Discontentment simply means dissatisfaction. Hence the "following alternatives to the underlined portion would NOT be acceptable: is "justify the gratification" (Option A). Note that this is a text of knowledge of synonyms.
<h3>What is a synonym?</h3>
A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language.
For example, in the English language, the words begin, start, commence, and initiate are all synonyms of one another: they are synonymous
Learn more about synonyms:
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I can't write you the whole essay but i will say people were taught things differently and develop different personalities through the things they've experienced during the past and that builds up themselves as a person.