I just had this question and the answer is D. high infant morality rate
Hi here you go
1. mathematics
2. trade
3. astronomy
4.a form of written communication with pictures
5.the invention of the wheel
6.the concept of time.
Answer:
According to behaviorists, operant conditioning may play a key role in how the rewarding effects of drugs lead to substance use disorders.
Explanation:
According to Skinner, operant conditioning is a learning method that takes place employing rewards and punishments as a response to a particular behavior. Operant conditioning determines how an individual associates a specific behavior and its consequences, such as drugs consumption and its effects.