Los profesores prefieren que los estudiantes estudien más para los exámenes.

Why was the subjunctive used in the sentence above?

The students fear that they won’t do well on their exams.
The teachers are scared that the students won’t pass the exam.
The teachers want the students to study for the exam.
The students are sure they will do well on their exams if they study.

Answer :

Answer: The teachers want the students to study for the exam

Explanation: Prefieren means rather, so the teachers would prefer the students to study for their examanes, estudien means study and examenes means exam. Thats the most obvious answer