Which technological innovation had the most direct impact on european exploration in the 15th century? a) steam engine b) printing press c) paper currency d) navigational compass

The correct answer is D.

the compass did not come to Europe until the 12th century AD. By the time of Columbus' voyage it was common. Instead of degrees, the compass card, on which directions were drawn or printed, showed the points of the compass, including north, south, east, and west. There are 32 points of the compass, the four main quadrants of the circle each divided into eight 11¼ ° points.  

answer; inductive techniques;

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.