Official Solution: Since the majority of customers are not complaining when they are dissatisfied, even those organizations most concerned with customer service have only a single opportunity to establish brand loyalty.A. Since the majority of customers are not complaining
B. Since the majority of customers have not complained
C. Since the majority of customers do not complain
D. When the majority of customers do not complain
E. In the event that the majority of customers are not complaining
Correct verb form and use of the word
since to indicate a causal relationship are being tested in this sentence. Because the sentence refers to events occurring in present time, the use of simple present tense and the verb form
do not complain are required. Additionally, the parts of the sentence are logically connected in a causal relationship: because most customers do not complain, companies do not have a second chance to establish brand loyalty. This logical relationship requires the use of the word
since.
A.
Are not complaining is present progressive tense and is not correct in the sentence.
B.
Have not complained incorrectly uses past perfect tense.
C. This option correctly uses
do not complain in present tense and the word
since to indicate a logical causal relationship between parts of the sentence.
D. The word
when introduces an unnecessary chronological element into the sentence.
E. The phrase
in the event that is wordy and does not express the necessary logical relationship among parts of the sentence.
Answer: C