Someone
me i dontt understand 10 questions

which sentence correctly forms the plural of 1960?

a.
my aunt was born in the 1960s'.

b.
my aunt was born in the 1960s.

c.
my aunt was born in the 1960's.

which sentence correctly forms the plural of the letters abc?

a.
knowing your abcs is essential for reading.

b.
knowing your abc's is essential for reading.

c.
knowing your abcs' is essential for reading.

which sentence correctly forms the plural of the number 9?

a.
judd's phone number is easy to remember because it has so many 9's in it.

b.
judd's phone number is easy to remember because it has so many 9s' in it.

c.
judd's phone number is easy to remember because it has so many 9s in it.

which sentence correctly forms the plural of the letter r?

a.
i wrote extra rs at the end of roarrr to show the sound the lion made.

b.
i wrote extra r's at the end of roarrr to show the sound the lion made.

c.
i wrote extra rs' at the end of roarrr to show the sound the lion made.
which sentence correctly forms the plural of the letter i?

a.
on this map of the united states, the four is' in mississippi are hard to read.

b.
on this map of the united states, the four is in mississippi are hard to read.

c.
on this map of the united states, the four i's in mississippi are hard to read.

which sentence correctly forms the plural of 1880?

a.
her great-great grandmother was born in the 1880s.

b.
her great-great grandmother was born in the 1880s'.

c.
her great-great grandmother was born in the 1880's.
which sentence correctly forms the plural of the number 8?

a.
ethan's phone number has four 8s' and a 4.

b.
ethan's phone number has four 8's and a 4.

c.
ethan's phone number has four 8s and a 4.

which sentence correctly forms the plural of the letter n?

a.
how many ns are in tennessee?

b.
how many ns' are in tennessee?

c.
how many n's are in tennessee?

which sentence correctly forms the plural of the letter q?

a.
don't you think that cursive capital q's look a lot like the number 2?

b.
don't you think that cursive capital qs look a lot like the number 2?

c.
don't you think that cursive capital qs' look a lot like the number 2?

which sentence correctly forms the plural of the letter o?

a.
how many os are in colorado?

b.
how many o's are in colorado?

c.
how many os' are in colorado?