In each of the questions given below four words are given in bold. These four words may or 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 should interchange. If the sentence is correct as it is then, select option “No interchange required” as your choice.

After having (A) the stress seemed (B) on a president, witnessing (C) access to a personal chef placed (D) to be the best perk of the job.

The correct option is A-C & B-D.

To determine the correct combination of words that need to be interchanged, let us analyze the sentence structure and context:
1. Original Sentence: "After having (A) the stress seemed (B) on a president, witnessing (C) access to a personal chef placed (D) to be the best perk of the job."
2. Analyzing the Errors:
- The phrase "the stress seemed (B) on a president" is contextually and grammatically incorrect. Stress is usually "placed" on someone, not "seemed" on them.
- The phrase "access to a personal chef placed (D) to be the best perk" is also grammatically incorrect. "Seemed to be" is the correct idiomatic phrase to express how something appeared. Thus, B and D need to be interchanged.
- Additionally, "witnessing (C) access" and "having (A) the stress" are contextually weak. It makes far more logical sense to "witness the stress" (observe it) and to "have access" (possess/enjoy access) to a personal chef. Thus, A and C need to be interchanged.
3. Applying the Interchanges:
- Swapping A (having) with C (witnessing) gives: "After witnessing the stress..." and "...having access to a personal chef..."
- Swapping B (seemed) with D (placed) gives: "...stress placed on a president..." and "...seemed to be the best perk..."
4. Resulting Correct Sentence: "After witnessing (A) the stress placed (D) on a president, having (C) access to a personal chef seemed (B) to be the best perk of the job."
Since this sentence is grammatically correct and conveys the intended meaning clearly, the correct combination to interchange is indeed A-C & B-D.