Which principal part is this verb form?
(have) ridden
a. past
b. past participle
c. present participle
d. present

True or false: a writer uses ellipses to indicate an omission or that something has been left out of a direct quote.

Which of the following will most likely happen if the pancreas does not produce sufficient insulin? blood sugar will decrease because insulin lowers blood sugar when it rises too high. blood sugar will increase because insulin increases blood sugar when it falls too low. blood sugar will increase because insulin lowers blood sugar when it rises too high. blood sugar will decrease because insulin increases blood sugar when it falls too low.

Which counter claim is most effective against this claim? rob's essay includes