What is the meaning of dyadic as it is used in paragraph 4

Correct the sentence by selecting the proper pronoun usage. they assigned the solo parts to ellen and her themselves. she themselves her theirselves she herself correct as is

Which of the following will most likely happen if the pancreas does not produce sufficient insulin? blood sugar will decrease because insulin lowers blood sugar when it rises too high. blood sugar will increase because insulin increases blood sugar when it falls too low. blood sugar will increase because insulin lowers blood sugar when it rises too high. blood sugar will decrease because insulin increases blood sugar when it falls too low.

Which is easier to identify direct or indirect characterization? why