Question

what is a grammatically correct use of commas? select the best answer.

answer

• to separate long sentences
• to introduce clauses
• to separate an adjective and an adverb of unequal weight

Explanation:

🆕 New Concept Discovered: Comma Rules
Using commas to structure sentences and clarify meaning.

Step 1: Analyze the first option

The first option is "To separate long sentences."

• Analysis: Commas alone cannot be used to separate two independent clauses (complete sentences). Doing so creates a grammatical error known as a "comma splice." To separate independent clauses, you need a period, a semicolon, or a comma followed by a coordinating conjunction (like and, but, or or). Therefore, this option is incorrect.

Step 2: Analyze the second option

The second option is "To introduce clauses."

• Analysis: Commas are standardly used to set off introductory clauses or phrases at the beginning of a sentence (for example, "Although it was raining, we went for a walk"). This helps the reader identify where the introductory element ends and the main clause begins. Therefore, this is a grammatically correct use of commas.

Step 3: Analyze the third option

The third option is "To separate an adjective and an adverb of unequal weight."

• Analysis: Commas are not used to separate an adjective and an adverb (such as in "extremely hot day"). Commas are used to separate coordinate adjectives (adjectives of equal weight that modify the same noun), but never to separate an adverb from the adjective it modifies. Therefore, this option is incorrect.

Answer:

To introduce clauses