When Survey Researchers Write Closed-Ended Questions,they Often Use Likert Scales

When survey researchers write closed-ended questions,they often use Likert scales to construct the possible answers.How do Likert scales allow respondents to answer?

A) They allow respondents to answer along a continuum, from "strongly agree" to "strongly disagree."
B) They allow respondents to answer with their own opinions.
C) They allow respondents to answer in simple dichotomies, like true/false or yes/no.
D) They encourage respondents to include detailed responses.