Stratified random sampling that tries to ensure an equal number of units per group is also called ____ random sampling

Salivation in response to food being placed in the mouth and an eyeblink response to a puff of air, are both examples of __________

a) unconditioned stimuli. b) conditioned responses. c) conditioned stimuli. d) unconditioned responses.

Explain the assimilation approach to awareness of one's ethnicity

What will be an ideal response?