Which of the following statements is true of the frustration-aggression hypothesis?

a. it states that besides frustration, no other experiences can cause aggression.
b. it states that frustration always leads to aggression.
c. it states that aggression usually leads to obedience.
d. it states that aggression stems from an attitude of altruism.

As with any small island country, cuba has fewer natural resources than countries such as brazil. this affects their economy in that cuba a) exports only manufactured products. b) exports more products than it imports.. c) must import more products than it exports. d) has imposed trade barriers against the united states.

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group.no, this does not need to be reported since it is unrelated to participation in the study.no, this does not need to be reported because two weeks have passed.no, this does not need to be reported since the subject recovered.

How has our understanding of the first sentence of the declaration of independence changed over time?