Question

Which sentence correctly forms the plural of the letters ABC?

A.
Knowing your ABC's is essential for reading.

B.
Knowing your ABCs' is essential for reading.

C.
Knowing your ABCs is essential for reading.

Answer 1

A

Answer 2

C

Answer 3

A implies that the "ABCs" are the owners of something
B implies that "ABCs" is more than one person and that this group of people own something.
C uses the" ABCs" as the subject saying that it is essential to know them. therefore C is the correct answer. Do you understand it now? Let me know if you need more help :)

Answer 4

c