<p>The store's <b>selection</b> today includes 30% more locally sourced products than in 2016, the year before Amazon bought the chain.</p>
<p>The correct answer is <b>(B) selection</b>.</p>
<p>In this sentence, we are talking about the collection of products that the store offers. The word "store's" indicates possession, so we need a noun form that shows that the selection belongs to the store. The noun form "selection" is the correct choice here. </p>
<p>The other options can be eliminated:</p>
<p>(A) selections - This is the plural form of the noun "selection." Since we are referring to a single collection of products, the plural form is not appropriate.</p>
<p>(C) selecting - This is a gerund form of the verb "select." Gerunds are verb forms that function as nouns, but in this context, we need a regular noun form to indicate possession.</p>
<p>(D) selectable - This is an adjective form of the verb "select." Adjectives describe or modify nouns, but in this context, we need a noun form to indicate possession.</p>