Seven-eighths of college students need to take a college-level math of these students,

Selecting 200 phones randomly and recording whether each phone is defective.

Step-by-step explanation:

The binomial experiment is defined as an experiment that contains 'n' repeated trials.

Each trial has only two outcomes. Either positive or negative. Or either yes or no. The yes is success and no is failure. The probability of success is same in each trial.

Therefore, as per the explanation, we can say that correct answer is - Selecting 200 phones randomly and recording whether each phone is defective.

Here 200 trials will take place with the probability of either a yes or no in each trial.