The correct answer is: Only assumption II is implicit.
The statement says that television has both entertainment and educational value. Assumption I says that people take television to be a means of entertainment only. This assumption is not implicit in the statement. The statement does not say anything about how people view television. It is possible that people view television as a means of both entertainment and education.
Assumption II says that the educational value of television is not realized properly. This assumption is implicit in the statement. The statement says that the educational value of television cannot be ignored. This implies that the educational value of television is not being fully appreciated.
Therefore, only assumption II is implicit in the statement.