I’m leanings towards A but it may also be B.
The best example of pioneer species would definitely have to be A. Lichens growing on rocks after a volcanic eruption because they’re able to grow on bare rock! They help the environment. Hope this helps :)
Active transport driven directly or indirectly by metabolic energy
It's called the
Follicular Phase
Phenotype is the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. Genotype is the genetic constitution of an individual organism. Allele is one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.