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.

The complex incorporating (A) was developed to heuristics (B) the efficiency of the system, algorithm (C) both optimize (D) and machine learning techniques.

Correct option is D

Correct Answer: D (A-C & B-D)

Explanation:

Sentence:
The complex incorporating (A) was developed to heuristics (B) the efficiency of the system, algorithm (C) both optimize (D) and machine learning techniques.

Step 1: Identify correct structure

The intended meaning seems to be:

• A system developed using algorithm and machine learning techniques
• To optimize efficiency

So the logical structure should be:

• algorithms and machine learning techniques
• optimize efficiency

Step 2: Word correction logic

(B) heuristics

• Meaning: problem-solving methods / algorithmic rules
• Hindi: अनुमान आधारित विधियाँ
  This fits better with machine learning techniques, not “incorporating was developed to…”

(C) algorithm

• Meaning: step-by-step procedure
• Hindi: एल्गोरिद्म / गणनात्मक प्रक्रिया
  This fits better in development context

(D) optimize

• Meaning: improve efficiency
• Hindi: अनुकूलित करना
  Correct verb for “efficiency”

(A) incorporating

• Meaning: including / integrating
• Hindi: सम्मिलित करना
  Fits better with techniques

Step 3: Correct swaps

• A ↔ C
• B ↔ D

After swapping:

Correct sentence becomes:
The complex algorithm was developed to heuristics both optimize the efficiency of the system, incorporating and machine learning techniques.

Now structure aligns with:

• algorithm = subject base
• optimize = action
• incorporating + machine learning = combination

Conclusion:

Correct swap is A–C and B–D

Final Answer: D