I think it will be B not fully sure
Two unicorns with no horns could have an offspring if the horn trait is recessive and the no-horn trait is dominant. There would be a 25% chance of the offspring from these two unicorns having a baby unicorn with a horn.
D is the rising magma, which is hot and is a molten rock.
B, as you can see, is an underwater volcano and is rising from the underground and the crater, vents, and fissures are inside the water.
A is a hotspot volcano, as it is present on the earth surface and is not an oceanic volcano.
C is the volcano from the melted crust.
The role of the legislation is to make and pass laws that will be followed by the citizens of the nation.
In this capacity, the legislation may declare endangered marshes under the protection of the government and impose penalties to those who tresspass on government lands.
The kind of evolutionary effect that has been described in the statement in question is Founder effect. The correct option among all the options that are given in the question is the last option or option "c". The Founder effect is actually a reduction in genetic diversity that results from a population that descends from a small number of colonizing ancestors.
Hope I helped :)