In the following question, out of the four alternatives, select the one word which best substitutes the expression lack of skill or ability.

Introduction / Context:

This verbal ability question checks your understanding of one word substitutes in English vocabulary. The phrase lack of skill or ability is common in competitive examinations, and knowing the precise word that expresses this meaning helps you read and write more accurately. The task is to choose the single word that matches the idea of someone who performs tasks badly because of poor skill.

Given Data / Assumptions:

• The phrase to be replaced is lack of skill.
• Four alternatives are given: Inertness, Insistence, Ineptness, Insolence.
• Exactly one option must match the meaning correctly.

Concept / Approach:

The best approach is to recall the meanings of each option and compare them with the phrase. We need a noun that directly refers to poor skill, clumsiness, or inability to do something well. Words that refer to rudeness, stubbornness, or inactivity do not match the required meaning and therefore must be eliminated.

Step-by-Step Solution:

Verification / Alternative check:

You can verify this by using each word in a simple sentence. A sentence like His ineptness at driving caused accidents clearly shows lack of skill. In contrast, inertness at driving sounds odd, insistence at driving does not fit, and insolence at driving would mean rudeness, not poor skill. This confirms that Ineptness is the precise synonym for the phrase given in the question.

Why Other Options Are Wrong:

Inertness is wrong because it describes motionless or inactive condition, not poor performance.

Insistence is wrong because it concerns firm demands or persistence, not ability level.

Insolence is wrong because it refers to disrespectful or rude behavior, not lack of skill.

Common Pitfalls:

Candidates sometimes choose options simply because they look or sound similar to the stem. It is important to focus on meaning, not only on spelling or sound. Another mistake is confusing emotional or behavior related words like insolence with ability related words. Always ask yourself whether the word answers the question what kind of ability or what level of skill.

Final Answer:

The word that best expresses the meaning of lack of skill is Ineptness.