(55) This sheep ran away from a farm and spent 6 years in the mountains, during which time he grew 60 pounds of wool. Wolves tried to eat him, but their teeth could not penetrate the wool. You don't have to be very strong to win the wolves, just be really, really soft and fluffy. 

wool 羊毛fluffy 毛絨絨的Adapted from https://twitter.com/fiqhtabayyun/status/1239091765811929088　55.Which bolded word is closest in meaning to “penetrate”? 

bolded 粗體的
(A) Why did she kill her husband?
(B) Cats like to hunt mice and birds.
(C) The windows are too dirty for sunlight to enter.
(D) She has made a cake and wants us to help eat it up.