When Mikhail Gorbachev became the Premier of the Soviet Union in 1985, he pivoted to a policy of... Choose 1

(Choice A)

A

the relentless expansion of Soviet borders and political influence.

(Choice B)

B

openness and political restructuring.

(Choice C)

C
nuclear brinksmanship.

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal