Think about how acids and bases would affect the water quality in the two lakes.
Which set of pH data would you expect to see based on
your observations?
O Lake A: pH = 4.5; Lake B:pH = 7.5
O Lake A: pH = 8.3; Lake B: pH = 3.7
O Lake A: pH = 6.6; Lake B: pH = 6.8
Lake A: pH = 10.2; Lake B:pH = 1.7

3. Lake A: pH = 6.6; Lake B: pH = 6.8

Explanation:

Water quality has greatly affected by the presence of acid and base inside the water. The water is not good for health when its highly acidic or highly basic. If the pH of water is nearly neutral, this water is best for drinking purpose. In the option 3, both lake A and lake B has pH nearly neutral so this water causes no bad effect on the health of the human body. Highly acid water has low water quality due to the presence of metals which adversely affect our body.

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

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.