The detail which best show that the narrator's activism has changed practices in the community is this: 'three weeks later, two businesses had signed on and two more said they do think about it. This option is the correct one because it shows that two businesses in the community has implemented the desired change already and two more businesses are on the verge of doing the same, which means the narrator's activism is already generating positive results in the community. <span />
Free (someone or something) from a constraint or difficulty
The sentence that is incorrectly punctuated is option B.
"Help me shovel the driveway please?"
The correct punctuation here is: "Help me shovel the driveway, please.
This is a request, so we use a comma before the word "please", that is used to make the request polite, not a demand or an order. The period is used at the end because the person is not making a question, but making a request.
