I think it would be coupon, comparative shopping, and mail-in rebate
hope this helps
<span>Nancy is a 4-month-old infant who utters repeated vowel sounds such as "aah and ooh." until 6 months of age, her speech consists almost exclusively of vowels. nancy is said to be in the Babbling stage of language development.
The correct answer is C. Babbling Please give me branliest answer</span>
The process of curtailing the performance of dysfunctional behaviors by eliminating whatever is reinforcing the behaviors is extinction.
