The <u>correct</u> answer is alternative A.
How = pattern adverb
IS = verb
She = subject
Explanation:
An adverbial
<em>Is a structure (word, phrase, or clause) that </em><em>modifies a verb</em><em>, adjective, or another adverb; it can </em><em>describe</em><em> the when, where, why, or how of the word it modifies. In this </em><em>sentence pattern</em><em>, the main adverbial always </em><em>modifies </em><em>the </em><em>be</em><em> </em><em>verb</em><em>.</em>
A verb
<em>Is a </em><em>word used</em><em> to </em><em>describe</em><em> an action, state, or occurrence, and </em><em>forming </em><em>the main part of the </em><em>predicate </em><em>of a </em><em>sentence</em><em>.</em>
Subject pronouns
<em>Are </em><em>those pronouns</em><em> that </em><em>perform the action </em><em>in a sentence. They are “</em><em> </em><em>I, you, he, she, we, they” and who. </em><em>Any noun</em><em> performing the </em><em>main action</em><em> in the </em><em>sentence</em><em>, like these pronouns, is a </em><em>subject</em><em> and is </em><em>categorized</em><em> as </em><em>subjective case</em><em>.</em>
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<u><em>Hope to help with my answer!</em></u>