Identify the sentence that uses numbers and abbreviations correctly

A: 26 people posted messages to my blog in just thirty-three minutes.
B: I learned in anatomy class that the adult human body contains 206 bones, and over 20 of them are located in the hand alone.
C: To avoid traffic, Kenneth leaves home at 5 o’clock each weekday morning.
D: Mehrun and Jimmy will meet us at the basketball court by three-thirty.

We'll be glad to check your answer.

my answer is C.

The sentence that uses numbers and abbreviations correctly is:

B: I learned in anatomy class that the adult human body contains 206 bones, and over 20 of them are located in the hand alone.

Explanation:

In this sentence, the numbers are written as numerals, which is the correct format for writing numbers. Additionally, the abbreviation "over" is correctly used before the number "20" to indicate a quantity greater than 20.