Step 1 : Understanding the Question:
This is a Sentence Completion question focusing on Vocabulary. The key to solving this is the cause-and-effect relationship in the sentence: the professor's style of explanation caused the students to "lose interest quickly." This implies that the explanation had a negative quality related to being boring, long-winded, or repetitive. We need to find the adjective that describes this "wordy" behavior.
Step 2 : Key Formulas and approach:
The approach uses contextual clues to determine the "charge" (positive or negative) of the missing word.
1. Identify the effect: Losing interest.
2. Infer the cause: The explanation must have been too long or tedious.
3. Evaluate the adjectives: Which word means "using too many words"?
Step 3 : Detailed Explanation:
Option (A) "verbose" is the correct choice. It means using or expressed in more words than are needed. A verbose explanation is "wordy" and often repetitive, which is exactly why students would find it boring and lose interest.
Option (B) "adroit" means skillful and clever. A skillful explanation would usually keep students engaged, not make them lose interest.
Option (C) "taciturn" describes a person who says very little. If a professor were taciturn, they wouldn't give a long enough explanation for students to "lose interest" in the middle of it; they would simply be quiet.
Option (D) "concise" means giving a lot of information clearly and in a few words. This is a positive trait and would help students stay focused, rather than causing them to lose interest.
Step 4 : Final Answer:
The word "verbose" describes the excessive wordiness that causes boredom, making Option (A) the logical fit for the sentence.