Respuesta :
Answer:
D
Explanation:
For each A, B, C and D, split the sentence up.
So now each reads out the following:
A. Mary's project and their's project
B. Mary's project and theirs project
C. Marys' project and theirs project
D. Mary's project and their project
Let's use the process of elimination.
C here is the odd one out, because you only can put an apostrophe after an 's' if the word already ends in an s or if the word is plural. In this case, the noun 'Mary' isn't plural and doesn't end in an 's', so C is incorrect.
After eliminating C, we can see that A is now wrong. Theirs is never used with an apostrophe. We always say either "their" or "theirs".
Now we only have B and D left. And the correct answer is D, because of the different between "their" and "theirs".
We use "their" when we use a noun after it, for example:
"Their son is smart."
We use "theirs" when we say that it is their property. It doesn't have a noun after it. For example:
"The car parked outside is theirs." -> can be replaced with "The car parked outside is their property."
In this case, after the pronoun, there is a noun, so we use "their" instead of theirs.
C would be the only answer that is not correct because the (‘) is after the y when it should be before the y in mary
