Answer:
Correct answer is to find a water route to Asia .
Step-by-step explanation:
Fourth option is the correct one as the first explorers didn't know about the existence of the New World. Their goal was to find a water route to Asia, as the Ottomans controlled the old Silk Road.
That is why all other options are not correct and can be connected with the later period when Europeans established connections with the Natives and started colonization of the New World.