Answer: Directional selection
Explanation:
In the population genetics, directional selection is the mode of selection during which the extreme phenotype are favored more than the other phenotype.
This causes the allele frequency to shift towards the time in the direction of that particular phenotype.
Here, in the question the acid tolerant plant species is favored over the other phenotype.
Hence, the correct answer is option D
It <span>cannot be </span>taken<span> by </span>mouth<span> because the digestive juices in your stomach and intestine will break down the </span>insulin<span> before it has a chance to get into your bloodstream to do its job</span>
