That would be B.
When u have a larger population at hand the chances of your predictions being right are higher. So for example if he predicted a 3:1 ratio(yellow to green peas) he’d have a higher chance of seeing this ratio in a larger population than he would in a smaller one.
The Nazca Plate is a oceanic tectonic plate which is responsible for the Andes mountain range
Plants are separated into C) 3 categories.