The correct answer is D.
The development of the Printing press allowed information to travel faster and reach a greater amount of people. This permited a larger group of people to acquire knoledge about the benefits of sailing the oceans to discover the new world, thus encouraging more expeditions to sail.
Also, the increasing publication of scientific books allowed scientists to share their research and new knoledge, while also bringin the problems that were constantly encountered by explorers into the public domain. Therefore, explorers counted with much more information that could be used to make their journeys succelssful.
