>>16858985>>16859038Also,
"An apple is red" depends on the context:
"What color is an apple?"
"An apple is red."
This is not singular apple being talked about, it is therefore equivalent to the second sentence in your first post, in fact, it to can be used to answer the question I presented
"What color is an apple?"
"Apples are red."
"The apple" on the other hand specifies one apple. Say, a green apple.
Are apples red? Sure they are, but THE apple is green.
"The" here implying the apple in the current context