I think the best answer will be c because everyone knows how he spends time
Answer:
how long does it need to be
A singular verb would be used with a singular noun (she, Bob, Jane, truck) while a plural verb would be used with a plural noun (they, cars, books).
For example "The truck drives away." Truck being a singular noun and drives being a singular verb.
Another example
"The cars drive away." cars being a plural noun and drive being the plural verb.
The one you have selected is the correct answer.
Immigration should be regulated because only legal immigrants contribute to the economy, skilled immigrants fill in-demand job vacancies and legal migration provides a safe option for at-risk groups of people to immigrate to the United States.
