Plants cannot get too much light, but they can get too much of the heat energy that comes with the light.
I'm thinking maybe it could probably be B
The main answer wold be diversity.
When you think about it, you only have a triplet code (which requires much less physical space than having all 64 possible codon combinations already present but either turned off or on). It makes much sense to have less actual physical compounds which can be combined in different ways (and a lot of ways) and produce the variety that can be required.
Answer:
Biotechnology greatly improved biodiversity. For example, Genetic modification produces genetically modified animals, plants and organisms. If they are introduced into the environment they can affect biodiversity. For example, existing species can be overrun by more dominant new species. Assessing the impact on biodiversity requires knowledge.