Question

In memoir, "imagery" refers to:

telling about the symbolism in the memoir
describing the scenery in the memoir
using general terms to tell about the surroundings
using sensory details to describe and create an image for readers

Answer 1

The correct answer is using sensory details to describe and create an image for readers

This is what imagery refers to in all types of art, not just memoir writing. It is also found in poetry very often, especially in the modernist era.