Can you please copy and paste the story, or say what the story is?
There are many important things in life but the most important thing in life to me, is family.
The correct answer is A. It is difficult to understand the part of "seven years' transportation to America". It seems to me that you should use a passive structure so as to place the kind of sentences that English courts were allowed to give first, and after mention that the first Penal Transportation Act was the one which introduced this change. The other answers do not apply to this sentence, there are no puntuation and spelling mistakes, and there are no unnecessary words.
Answer:
My wife gave me a hundred rupees, (but/however) I can't find it.
He bought a house and it's near the zoo. (It could also be) He bought a house near the zoo.
I wanted to buy the car (but/however) it was costlier than my house.
Explanation:
You could use either but or however for the first and last question because the second sentence is contradicting the first sentence. For the second question you could have it both ways, but I recommened using the first way, (He bought a house and it's near the zoo.) because it uses a clause.