The correct answer is: C. Either I or II is implicit
The statement says that science is a sort of news agency that gives us reliable information. It also says that science should be read with as much interest as we read news.
Assumption I is that science encourages investigative spirit. This is not explicitly stated in the statement, but it is implied. The statement says that science is a sort of news agency, and that it gives us reliable information. This implies that science is based on evidence and investigation.
Assumption II is that people read news out of interest. This is also not explicitly stated in the statement, but it is implied. The statement says that science should be read with as much interest as we read news. This implies that people read news because they are interested in it.
Therefore, either assumption I or assumption II is implicit in the statement.