Answer:
Long, harsh Canadian winters made farming difficult.
Explanation:
There were many obstacles that limited the growth of New France, but among the choices provided, that is clearly the best answer: Long, harsh Canadian winters made farming difficult. Canadian winters are extremely more difficult to live though than what they were used in France (in that era as well as today's).
Let's look at the other answer choices:
French explorers were unable to find inland water routes in North America. False, just think about Marquette.
Louis XIV did not support the growth of New France.
False, he did support New France a lot by financing it generously.
Native Americans taught the French how to harvest cod for export. I'm pretty sure if's not true... but even if it was, that would be a reason for New France to grow, not a problem limiting its growth.
