what is one effect that an in medias res opening is meant to have on the
reader?

This question is incomplete. Here´s the complete question.

What is one effect that an in medias res opening is meant to have on the reader?

A.The reader is meant to guess about the nature of the conflict.

B.The reader is meant to question deeply held notions about setting and point of view.

C.The reader is meant to pick up on the theme of the story.

D.The reader is meant to immediately worry how the story will turn out for the main character.

D. The reader is meant to immediately worry how the story will turn out for the main character.

Explanation:

In medias res is a Latin expression that means “in the midst of things,” and it means starting a story from the middle instead of the beginning. Readers are therefore immediately compelled to find some answers about the preceding action as well as the following results. The purpose of this literary device is to create suspense.

shakespeare was famous for writing in iambic pentameter, which is a specific way of rhyming sonnet lines in ten syllables. there are also forms of unrhymed iambic pentameter, as in macbeth, with the noble characters.

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.