Please Match the Following Definitions with the Terms Below

Please match the following definitions with the terms below.
-____ Variable-ratio responding

A) After a response is reinforced, no responding occurs for a period of time, then responding occurs at a high, steady rate until the next reinforcer is delivered. (This is the responding, not a schedule.)
B) The way reinforcement occurs because of the number of responses, time since reinforcement, time between responses, and stimulus conditions.
C) These schedules produce a high rate of responding, with almost no post reinforcement pausing. (This is the responding, not a schedule.)
D) A reinforcer is contingent on the last of a fixed number of responses.
E) Reinforcement schedule in which a reinforcer follows the response only once in a while.
F) A reinforcer is contingent on the last of a variable number of responses.
G) A reinforcer follows each response.