The second sentence of the 1st paragraph for sure and the third and fourth sentences yuo can both pick their both right but your only to provide two so. I hope this helps be sure to mark me the brainliest.
Answer:
Vaccination.
Explanation:
If you get a virus, then your body makes immunities to it. Thus, when the vaccine is introduced, more antibodies are introduced.
Answer:
C: Positive
Explanation:
It makes the most sense :)
Answer: Many buses in the terminal are waiting to depart.
This sentence is the only one that uses a verb that agrees with its subject. In this case, the subject is "buses." The verb, which is "are," agrees with the subject because it also takes a plural form. All of the other options have verbs that do not agree with the subjects of the sentences.