The sentence describes a general truth or a recurring trend in the modern world: as technology improves, consumers naturally want better products. In English grammar, general facts, habits, and universal truths are expressed using the Simple Present Tense. Since the subject "consumers" is plural, the base form of the verb (demand) is required to maintain subject-verb agreement. Option B ("might demand") suggests uncertainty, which doesn't fit the factual tone of the sentence. Option C ("has demanded") is grammatically incorrect because "has" is singular while "consumers" is plural. Option D ("were demanding") uses the past continuous tense, which implies a temporary action that happened in the past, rather than an ongoing reality of the technological era.