Answer:
c
Explanation:
guessing c because it is the cheapest price and they have low budget
Answer:
This landscape is what makes up the country portrayed by the report,” said Rafael Georges, author of the document and Oxfam campaign coordinator for Brazil. The gap between rich and poor had been on the wane in Brazil since 2002, according to the Gini index for total income per capita, gauged by the National Household Sample Survey (PNAD-IBGE).
The correct answer is fixed-interval
In a fixed interval reinforcement scheme, the reinforcement is presented if the organism emits at least one response after a fixed time interval. Generally, this scheme is represented, placing the specific value of the fixed interval. For example: FI-1 hour means that the backup is presented after 1 hour and only for the first response issued.
The fixed interval reinforcement scheme results in a low frequency of responses at the beginning of the interval, increasing as the end of the interval approaches.
