HHHHHHHHHEEEEEEEEEEYYYYYYYYYY
The correct answer is C. week is.
The reason why this is incorrect is because there has to be a comma between the words week and is. The clause 'who is visiting the US this week' is an appositive clause, which means that it has to be set off from the rest of the sentence using commas. Hope this helps!
Question 10: true
Question 11: C "Remember, look both ways before you cross a street."
Question 12: A "Do you remember how to figure out the area of a parallelogram? I'm having trouble doing it."
Question 13: C "Make sure you put the turkey in the oven at noon," Mildred said.
Question 14: C begin a new paragraph
Question 15: C The Cubs, my dad's favorite ball club, finished in last place again.
Question: 16: Before but
Quesion 17: D "It seems to me," mused Shawn, "that those policies are confusing."
Question 18: D no comma necessary