Which of the words is a preposition in the following sentence?

we walked around the perimeter of the school, picking up trash.

a. we
b. around
c. school
d. picking

Jana wants to score her own essay using a rubric. she finds that she has not supported her main idea, “solar power is economical,” with relevant facts. she needs to correct a couple of spelling errors, and there are a few sentences that are not focused on the topic. what is her score on this essay using the rubric? a . 1 b . 2 c . 3 d . 0

Can someone me on getting a response essay by nannette croce "columbus day controversy"?!

What influenced robert louis stevenson's writingstyle?