Question

Pick out the best filler which can complete the given sentence correctly:
Trained workers are essential for the ------------- functioning of the factory.

• A. efficient
• B. futile
• C. fruitless
• D. hollow

Hint:

Look at the tone of the sentence. "Trained workers" and "essential" are highly positive and constructive words. Therefore, the blank must be filled with a positive adjective. Out of all options, only "efficient" carries a positive meaning!

Answer 1

The Correct Option is A

Concept: Sentence completion tasks require a precise understanding of contextual clues, semantics, and real-world logic. The sentence establishes a cause-and-effect relationship using the word "essential" (absolutely necessary). It tells us that "trained workers" (skilled, experienced labor) are required to achieve a specific kind of operation or "functioning" inside a factory. We need an adjective that logically matches the positive value and productivity brought by trained personnel.

Detailed Vocabulary Analysis:

• Efficient (Adjective): Achieving maximum productivity with minimum wasted effort or expense; working in a well-organized and competent way.

• Futile (Adjective): Incapable of producing any useful result; completely pointless or useless.

• Fruitless (Adjective): Failing to achieve the desired results; unproductive or unsuccessful.

• Hollow (Adjective): Having an empty space inside; metaphorically meaning insincere, without real value or significance.

Step-by-Step Logic:

• Why do factories invest time and money in hiring or teaching "trained workers"? They do so to minimize errors, boost output, avoid accidents, and ensure optimal operations.

• Therefore, trained workers will lead to an

efficient system.

• Using negative words like futile, fruitless, or hollow would create a logical contradiction, implying that skilled workers are needed to make a factory fail or run uselessly.

Analysis of Options:

• Option (A) is correct because "efficient functioning" is a structurally and contextually perfect collocation that represents smooth, high-productivity operations.

• Option (B) is incorrect because it makes no sense to require trained staff for a "useless" operation.

• Option (C) is incorrect because "fruitless functioning" means a failed process, which contradicts the benefits of training.

• Option (D) is incorrect because "hollow" does not fit logically or grammatically with the operational nature of a factory's day-to-day work.