Approximately 10% of the energy absorbed by one
trophic level is transferred to the next successive
level. The same number of calories are available at
the primary producer level of each of these food
chains.
Food Chain 1:
phytoplankton → zooplankton → smelt → trout → humans
Food Chain 2: phytoplankton → smelt → humans
How much energy is available to humans in
Food Chain 2 as compared to the energy available
to humans in Food Chain 1 ?
(look at the difference in trophic levels)

the answer to your question is sperm

the answer is c because it is most logical.

wild parsnip is a perennial plant which reproduces rapidly in areas which have no sign of agricultural activity such roadside or at no tillage open areas. it's considered invasive because it can inhibit the growth of another plant  and its reproduction is fast. there are several harmful effects of this invasive plant although its taproot is edible since it is a member of the carrot family. wild parsnips can cause skin blistering when in contact because of the chemicals it contains, second it inhibits the growth of other plants, it will restrict the growth of animals when eaten and lastly, it drives away natural pollinators like bees.