Answer:
Pretty Sure it is A
Explanation:
Implicit statements imply something, such as in this case, that Erika is nervous and something is about to happen. In explicit statements, something actually happens. Erika is acting out, so there is no suggesting it, she is simply doing so. Therefore, it is most likely A.
From the many books I have read I would say the author would use forshadowing or a very short description of the character when introduced.
For expensive;
The vehicle was very expensive, although the family could afford it.
