Answer:
A would be the best in my opinion.
Explanation:
Although it lacks the "then" it is the closest to the "if...then..." format. It also shows you independent and dependent variable and what you believe will happen.
D Is definitely wrong because it is a question.
Sorry if I'm wrong! Please let me know for my curiosity sake if I was right.
The first Mughal emperor was Babur who is also known as the founder of the Mughal Dynasty.
St Petersburg was frozen and unusable for half the year
Also they didn't have fish to eat for half a year
So when that warm water port was acquired it was a game changer.
The answer should be D. :)