Although the teacher explained the theory clearly, the students found it hard to understand it. A. In spite of explaining the theory clearly, the students themselves found it hard to understa

In spite of explaining the theory clearly, the students themselves found it hard to understand it.

Despite the teacher's clear explanation of the theory, the students had difficulty understanding it

Though explained clearly, the theory of teaching was difficult to the students.

Although the teaching theory was clear, it was a real challenge to the students.