Which of the following is a run-on sentence?
marta and brent carried in a cord of firewood because it was supposed to snow for four days.
marta and brent carried in a cord of firewood it was supposed to snow for four days.

What makes this part of the anecdote about elisa effective? when [elisa] finally walks home, after seven hours of standing at a cash register, her feet hurt. she's wiped out. it makes the reader trust the author as an authority on teenage issues. it uses emotional language to the reader experience elisa's daily challenges. it presents facts to support the long hours elisa is required to work.