Answer:
A root word is a word or part of one, it basically can help you form the new words through the addition of prefixes and suffixes. Because it is the base of the word. Hope this helps! Please mark brainliest :)
C. The platypus, which is a mammal, has a bill like a duck and feet like an otter.
"which is a mammal" is an adjective clause. An adjective clause is used to describe a noun and usually begins with one of these words: that, when, where, who, whom, whose, which, and why. In this sentence, the adjective clause begins with "which" and describes the platypus, which is a noun.
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
I would say c her family heritage
