Which sentence I correct?

A. The sidewalks in the courtyards has been decorated with chalk.
B. The cars in the parking lot belongs to the teachers.
C. The surface of the parking lots were redone this summer.
D. The bike on the bike rack is blue

D. The bike on the bike rack is blue.

Which sentence demonstrates correct subject verb agreement?

A. Where are the hookup for the hose ?
B. Where is the students going to plant?
C. Where is the plants growing?
D. Where are the watering cans stored?

D. Where are the watering cans stored?

Use the sentence to answer the question.

All of the residents uses the courtyard daily, so everybody picks up the trash and pulls weeds.
Which change will correct the sentence?
A.change all to some
B. Change uses to use
C. Change everybody to anybody
D. Change picks to pick

D. Change picks to pick.

The correct sentence is D. "The bike on the bike rack is blue."

To determine which sentence is correct, we can analyze the grammar and identify any errors:

A. "The sidewalks in the courtyards has been decorated with chalk."
The correct verb form should be "have" instead of "has" because "sidewalks" is plural. Therefore, sentence A is incorrect.

B. "The cars in the parking lot belongs to the teachers."
The correct verb form should be "belong" because "cars" is plural. Therefore, sentence B is incorrect.

C. "The surface of the parking lots were redone this summer."
The correct verb form should be "was" instead of "were" because "surface" is a singular noun. Therefore, sentence C is incorrect.

D. "The bike on the bike rack is blue."
This sentence does not appear to have any grammatical mistakes. Therefore, sentence D is correct.

In summary, the correct sentence is:
D. "The bike on the bike rack is blue."