Stress signals are the ways you express stress for example: ruminating thoughts, shaking of legs, pacing.
Stressors are things that stress you, for example relationship problems or exam.
while you have to answer this question for yourself, I can give you some examples:
shaking before an exam
ruminating thoughts before meeting parents
pacing before a flight
Because industrial resources like coal and iron were in Central and Northern England.
Answer:
a. Continuous reinforcement schedule (CRF)
Explanation:
Under DRA(differential reinforcement alternative), behaviour that is an accepted alternative to problem behaviour is accepted and reinforced. This reinforcement frequency correctly falls under continuous reinforcement schedule(CRF) where behaviour is reinforced everytime there is a correct response. For example, if you were teaching a child to pronounce certain words correctly, you would reward the child everytime he got a pronunciation correct.