In which instance would it be best to delay stating the main idea until after all the supporting details have been presented? when a topic is complicated and the writer needs to do more to the readers when an author wants to present all the evidence before taking a position when an author is writing on an issue that most readers will agree with when the topic of the essay will be new or unfamiliar to most readers

Definitely when the writer is writing about something the reader will think complicated.

Explanation:

f the author shows this point at the beggining maybe readers will stop reading and the author´s plans can get down, on the other hand if the author mekes his points on explanations, involves the readers, if he convinces, being soutle readers are understanding all the main point the writer has a great chance to keep his secret as a secret untill the  right moment it can be reviled, and at this moment readers will be able to understand the author´s point of view.

a. by showing how a character reacts to or interacts with his or her   surroundings

explanation:

the setting reveal information about a character by showing how a character reacts to or interacts with his or her   surroundings.

the answer is minnesota