Can someone please help me with this?

Ineed to find the answer of this question because i dont understand it

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

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver