I’d choose C but biology was a bit ago
ν=c/λ
c=300.000.000m/s=300.000.000.000.000.000nm/s
λ=532nm
v=300.000.000.000.000.000/532=5.6*10^14Hz(third option)
It is d) to continue the species!!
hope this helps :)
That is when extinction occurs. Hope I helped!