Answer:
A.) Fixed interval schedule
Explanation:
Reinforcement schedules may be carried out after a number of resposes or a specific length of time. Ratio schedules involves reinforcement carried out after a certain number of responses while interval schedules are carried out based on a specific time frame.
Similarly, Fixed schedules involves responses carried out within a known or predictable time frame while variable schedules aren't fixed and are thus unpredictable.
In the case of Ms. Davis narrated above, she carries out reinforcement every morning between 8:00 - 8:30 a.m ; Thaibdepicysbthat reinforcement occurs at a fixed time and duration ; this means the time is known and the period is time is specified. Hence, this is a FIXED INTERVAL SCHEDULE.
Answer:
Month two
Determining fetal gender by transrectal examination between 55 and 75
No China is not a developed country
Border separating colonists from Native American lands.
Heavy taxes, placed on Colonists so they were never paid what they were owed for helping the British.
You could tell them that the food chain is basically something that shows the feeding relationship between different living things. The food chain represents a series of food and energy are transferred from one organism in an ecosystem to another.<span />