The diagram below shows four fossils found in different time periods. Fossil A is the oldest and fossil D is the youngest.

Fossil A is from a four-toed animal and shares many similarities with fossil B. Likewise, fossil B shares many similarities with fossil C, and fossil C shares many similarities with fossil D, which came from a hoofed species. Additionally, fossil A and fossil D have never appeared in the same geologic time period.

Which of the following assumptions about the history of these fossils is best supported by this evidence?
A.
A new four-toed species evolved from a hoofed ancestor.
B.
A hoofed species died out and was replaced by an unrelated four-toed species.
C.
A new hoofed species evolved from a four-toed ancestor.
D.
A hoofed species interbred with a four-toed species to create a hybrid species.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.