Answer:
D). It is a premise offered in support of the conclusion that people’s responses to words are engendered not only by what the words mean, but also by how they sound.
Step-by-step explanation:
The boldfaced portion('people also...words') in the given argument is functioning as the premise to back the conclusion that 'people's....sound.' A premise primarily functions to support or substantiate a deduction which is effectively played through the given proposition(boldfaced part). The other options are incorrect as they either involve the incorrect conclusion(option A and E) or wrongly considers the bold part as 'conclusion' or 'generalization'(option B and C). Thus, option D is the correct answer.