C.) a rotting log I think
I think the answer would be fixed ration schedule of reinforcement. It is the type that would yield the highest rate of response. Schedule of reinforcement are rules that would contain what behaviors that will have consequences and what are these consequences and degree of the punishment
Answer:
D. developmental milestones
Explanation:
Developmental milestones -
It refers to the physical skills , qualities or behaviors that are observed during the growing years of an infant , is referred to as development milestones .
Developmental milestones is also known as specific normative
There are range for every milestone of the stages of developments , like , crawling , walking , speaking etc .
There is some variable age group , where the child leans various activities .
Hence , from the given statement of the question ,
The correct option is D. developmental milestones .
