Kindly tell which sentence is right

Original sentence:

Today, a billion Indians are dreaming big. And we’re here to make sure every one of those dreams comes true

I tried to write in different ways as follows but maintaining the essence of the sentence kindly tell me if these sentences are right]

a. Today, a billion Indians are dreaming big. We’re here to make sure it comes true

b. Today, a billion Indians are dreaming big. We’re here to transform it into reality

c. Today, a billion Indians are dreaming big. And we’re here to make sure everyone’s dream comes true

 ok instead of it how is the folowing sentence 

Today, a billion Indians are dreaming big. We’re here to make sure their dreams comes true