Concept:The total number of oranges remains the same in both cases.So we first find the total, then divide it by the new number of students.Explanation:Total oranges shared among 50 students:=50×15=750 oranges.Now, these 750 oranges are shared equally among 30 students.Each student gets:30750=25 oranges.Thus, each of the 30 students will receive 25 oranges.Answer:25 oranges per student.Correct option: C. 25