In explaining a concept which of the following describes definition?

where is the following so I can answer this

Explanation:

A concept is a thought or idea. It's a general idea about a thing or group of things, derived from specific instances or occurrences. ... It often applies to a theoretical idea in science: Einstein's contribution to the concept of relativity.

1. a statement of the exact meaning of a word, especially in a dictionary.

"a dictionary definition of the verb"

2.  the degree of distinctness in outline of an object, image, or sound, especially of an image in a photograph or on a screen.

1# the answer is c

2#the answer is a

definition was not one of the four methods