Why was Fort Ticonderoga heavily fortified?

AIndians were always attacking it.
BGold was stored there.
CIt protected the water route to Canada.
DThe king visited it frequently.

Verified Answer :

The main reason why Fort Ticonderoga was so heavily fortified was because "C) It protected the water route to Canada," since this was a crucial fortification for the colonists to hold against the British. 

Answer: it’s C mate

Explanation: