Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

If one is to construct a comprehensive model of the global economy, we must first account for alternating periods of expansion and contraction in the business cycle.

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

Though one must respect the opinions of others, you do not have to change your values to become part of the crowd.

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

If one wishes to understand a musical composition fully, we must consider the time period in which it was written.

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices repeats the underlined portion as it is written.

When you go to a buffet, one should make sure that you do not overeat.

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

While limiting artificial sugars is a wise thing to do, dietitians warn that one must also monitor your intake of salt, carbohydrates, and saturated fat.

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

Does one have a responsibility to help others, or do you only have a responsibility to help yourself?