In each of the following questions, three statements are given with a phrase or idiom highlighted in bold. You have to select the answer choice that states the combination of statements in which the idiom or phrase has been correctly used.
I. The manager advised his team not to put all their eggs in one basket by relying solely on a single client for revenue.
II. The students were instructed to toe the line and adhere strictly to the new guidelines imposed by the administration.
III. His sudden promotion was a chip on his shoulder , as it led to greater responsibilities and significant career growth.