1

Problem

My sister, who lives in New York, is visiting us next weekend and plans to stay for a few days. Which option best describes the clause “who lives in New York”?

2

Clue

The phrase "who lives in New York" adds extra information about my sister, but the meaning of the sentence is still clear even without it. Therefore, it does not restrict or define which sister — it only provides additional, non-essential detail.

3

Hint

A non-essential clause gives extra information and is set off by commas. An essential clause is necessary to identify the noun and usually does not use commas.

4

Sumup

Please summarize Problem, Hint, Clue

Choices

5

Choice-A

Choice A is incorrect. A clause cannot be both essential and non-essential at the same time; it must function as one or the other, not both.

Wrong either essential or non essential

6

Choice-B

Choice B is incorrect. A clause cannot be simultaneously essential and non-essential; this option contradicts grammatical logic.

Wrong both essential and non essential

7

Choice-C

Choice C is correct. The clause "who lives in New York" is surrounded by commas and provides extra information—not information needed to identify which sister—so it functions as a non-essential clause.

Correct non essential clause

8

Choice-D

Choice D is incorrect. An essential clause does not use commas because it is required to identify the noun it modifies, which is not the case here.

Wrong Essential Clause

9

Step

Correct Answer: non essential clause

10

Answer

Option

C

11

Sumup

Please summarize choices