Which of these is not classified as an organism?

a)kidney
b)tree
c)lizard
d)protozoa
*most of my questions are science but there is no science option*

A. Kidney.  Organisms and organs are not the same thing.  Organisms are made from organs but they are not the same.  Kidneys are vital organs not organisms, therefore the answer is A.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

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.