Which of these things is a protist? A. Mycoplasma pneumoniae, a single-celled
bacterium without a nucleus that causes
B. Euglena spirogyra, a single-celled algae
with a nucleus and flagella, or flippers, that
help it move around
D. Apodemus sylvaticus, a complex,
pneumonia
C. Geotrichum candidum, a complex,
multicellular fungus used to make cheese.
multicellular creature known as a wood
mouse.

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.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

what in the weirdo : o

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.