Alan always turns the aquarium light on before putting fish food into the tank. after a while he notices that the fish swim to the top to look for the food as soon as he turns on the light. in this example, is the unconditioned stimulus.
a. presence of alan near the aquarium
b. aquarium light
c. fish swimming to the top
d. water temperature
e. fish food

Which is the best conclusion that can be drawn regarding the status of african-americans in the south in the late 1800s? a) african-americans made tremendous political, social, and economic advancements during the reconstruction era. b) passage of the 13th, 14th, and 15th amendments to the u.s. constitution guaranteed equal status and rights for all african-americans. c) the reconstruction policies enacted by the federal government were highly effective in african-american citizens transition to life after slavery. d) although african-americans had equal rights under federal law they were still economically, politically, and socially inferior to whites in the south during the reconstruction era.