Correct option is D
Given:
Statement:
Training involving real classroom experiences must be given to all pre-service teachers to make them skilled and effective in the classroom.
Assumptions:
I. Real classroom experience is an essential component of a teacher's training - Implicit (The statement emphasizes that real classroom experience must be included in training to ensure teachers become skilled and effective).
II. A person can not be a skilled and effective teacher without training - Not implicit (because the statement does not claim that training is the only way to become a skilled teacher).
So, Only assumption I is implicit.
Thus, the correct option is: (d)