Answer:
Letter A is correct for both sentences.
Step-by-step explanation:
A simple sentence has only one clause: a subject and its predicate. In the sentence, the subject is the price of admission, while its predicate consists in is a can of food or a child's toy.
In the second one, the question asks for the informative purpose. B is incorrect because the main intention of a play is not to inform. C is also incorrect because even though the advertisement provides information, it is not always presented in a clear way. The review also wants to inform about the orchestra, but the critic's point of view is not always objective. On the other hand, letter A narrates the facts of an event and describes it effects, so it is the correct answer.