Can someone show me the workings to this answer? the marking scheme says (a) is the answer but i don’t understand how

Newtons second law deals most cosely with

What is a metal replacement reaction

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature