A/an anonymity (A) disadvantage of online discourse (B) is that people can often say whatever (C) they like in complete major (D).

In the question below, four words are given in bold, which may not be arranged in the correct order. Choose the replacement needed between the words to make the sentence correct and meaningful.

The correct answer is Only (A)-(D).

Let's analyze the sentence and check the correct positioning of the words in bold:

"A/an anonymity (A) disadvantage of online discourse (B) is that people can often say whatever (C) they like in complete major (D)."

Step 1: Analyzing word positions and meanings

1. Word (A) anonymity is a noun, but it is placed right before another noun "disadvantage". Using "major" (an adjective) here makes grammatically better sense to describe the disadvantage ("A major disadvantage...").
2. Word (D) major is placed at the end of the sentence following "complete". The phrase "in complete..." requires a noun. "Anonymity" is a noun, forming the idiomatic and meaningful phrase "in complete anonymity".

Step 2: Checking the swaps

Swapping word (A) anonymity with word (D) major gives:

"A major (A) disadvantage of online discourse (B) is that people can often say whatever (C) they like in complete anonymity (D)."

This swapped sentence is grammatically correct and coherent in meaning.

Therefore, only swapping (A)-(D) resolves the error.