Which of the following is not something the allies hoped to gain from a successful attack on the dardanelles straits? a. control of the sea of marmora and constantinople b. entrance into the black sea c. control over the caucasus mountains d. ability to transport supplies to the russians

The best answer for this question would be:

C. control over the Caucasus Mountains

The caucaus mountains was a system in the West Asia Sea. Some countries had to have a war, in order to gain control over the intervening mountains. 

( sorry my answer is short they wont let me do just war so ignore this) xd

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes