Which sentence best shows correct comma usage? a. the beach was full of, happy carefree tourists. b. the beach was full of happy, carefree tourists. c. the beach was full of happy, carefree, tourists. d. the beach, was full of, happy carefree tourists.

The answer is indeed letter B. The beach was full of happy, carefree tourists.

Explanation:

One of the many uses of commas is to separate coordinate adjectives. Coordinate adjectives are words that come in a row and modify the same noun. In the sentence we are analyzing here, both "happy" and "carefree" are modifying the noun "tourists". Therefore, we must separate the adjectives with a comma - or use "and" between them, which is not the case here. Option B is, thus, the right one.

Option A brings a comma after the preposition "of", separating it from its object, which makes it incorrect.

Options C brings a comma after the second adjective, separating it from the noun it modifies. That also makes it an incorrect option.

Finally, option D brings a comma separating the subject and its verb, as well as a comma separating the preposition and its object. Again, it's an incorrect option.

the price of our current war is high; it costs money and it costs lives.

but it does not cost our pride. it does not cost the guilt that would arise from knowing that we did nothing to intervene while our neighboring nations fell to despotic leaders.

it does not cost the terror of knowing that our allies are unstable. it does not cost the fear that we, too, will be next to fall.

which sentence most accurately explains why the speaker's use of the parallel structure is effective in this passage?

a. it underscores that disagreement will not be tolerated and will be dealt with swiftly.

b. it makes the speaker seem like a decisive and capable leader.

c. it emphasizes reasons to fight and inspires listeners to aid the war effort.

d. it establishes the speaker's credibility by acknowledging the difficulties of war.