The letters always change. They are never the same as someone else’s.
They are defiantly strictly factual
<span>Depending on the sense of delicate, there are various antonyms or opposites. These could be: crude, coarse, bold, vibrant, strong, durable, healthy, robust, clumsy or insensitive.</span>
As the name indicates helping verbs are the verbs that help the main verb of the sentence to convey their meaning more effectively or help the main verb to extend their meaning.
Some examples of helping verbs are: is, are, am, can, must, be..
In the given sentence, must is the helping verb, as it is helping our main verb "need" to do convey its function. Really is an adverb and is not a helping verb.
So the correct answer to this question is:
Option A. Must
