Concede. A verb. To admit that something is true after denying it.
The subject does agree with the verb because the subject is students and the verb is use. The subject is plural and the verb is singular.
Multiple choice questions for which usually only two responses are given, such as: yes or no, true or false, male or female, are called Dichotomous questions. Dichotomous questions are commonly used in interviews as a way to determine if the respondents are suited to answer the next questions.
