In the question below four words are given in bold. These four words are may not be in their correct position. The sentence is then followed by options with the correct combination of words that should replace each other in order to make the sentence grammatically and contextually correct. Find the correct combination of the words that replace each other.

In his relentless conducting (A) of knowledge, the scientist spent years pursuit (B) understanding (C) research that pushed the boundaries of human groundbreaking (D).

Correct option is C

Correct Answer: C — Only (A)-(B) and (C)-(D)

After interchanging conducting (A) with pursuit (B) and understanding (C) with groundbreaking (D):

Correct sentence:

In his relentless pursuit of knowledge, the scientist spent years conducting groundbreaking research that pushed the boundaries of human understanding.

Only the positions of the highlighted words are changed.

Meaning of Highlighted Words (English + Hindi + Example)

conducting (A)

English Meaning: Carrying out or performing
Hindi Meaning: संचालन करना, करना

Example: She is conducting an experiment.

Position Analysis (Original):
“In his relentless conducting of knowledge…”
Incorrect because “conducting of knowledge” is not a correct expression.

After interchange:
“…spent years conducting groundbreaking research…”
Correct usage: conduct research.

pursuit (B)

English Meaning: The act of following or striving to achieve something
Hindi Meaning: प्रयास, पीछा, अनुसरण

Example: He dedicated his life to the pursuit of excellence.

Position Analysis (Original):
“…spent years pursuit understanding research…”
Incorrect because “spent years pursuit” is grammatically wrong.

After interchange:
“In his relentless pursuit of knowledge…”
Correct noun phrase: pursuit of knowledge.

understanding (C)

English Meaning: Knowledge or comprehension
Hindi Meaning: समझ, ज्ञान

Example: She has a deep understanding of physics.

Position Analysis (Original):
“…years pursuit understanding research…”
Incorrect placement; structure becomes meaningless.

After interchange:
“…boundaries of human understanding.”
Correct collocation.

groundbreaking (D)

English Meaning: Innovative; pioneering
Hindi Meaning: अभिनव, क्रांतिकारी

Example: The scientist made a groundbreaking discovery.

Position Analysis (Original):
“…human groundbreaking.”
Incorrect because “groundbreaking” is an adjective and cannot follow “human” like this.

After interchange:
“…conducting groundbreaking research…”
Correct adjective + noun structure.

Why (A)-(B) and (C)-(D) Are Correct?

Original incorrect phrases:
“relentless conducting of knowledge”
“years pursuit understanding research”
“human groundbreaking”

After correct interchange:
“relentless pursuit of knowledge”
“conducting groundbreaking research”
“human understanding”

All structures become grammatically and contextually correct.

Final Answer:

Option C — Only (A)-(B) and (C)-(D)