Filial piety is a Chinese concept (respect for elders) so I wonder whether you mean in China, but I'll answer generally:
Respect for those who have been there before us, and learning can give us invaluable information about what has worked in the past and what hasn't, which is a good input into a good government. Also respect for elders is also a good basis for a harmonious society.
Answer: 3. variable ratio
Options:
1. fixed interval
2. fixed ratio
3. variable ratio
4. variable interval
Explanation: The variable ratio of reinforcement uses rewards to create a high and steady rate of response. The rate of reward for a target behavior is unpredictable so the rat does not know when its response will get a reward. It will keep responding until the reward is delivered.
The options listed above are schedules of reinforcement. They are schedules used in rewarding target behavior in Operant conditioning.
The correct option is D.
Informal assessment refers to those tools that are used to measure a student's personal performance and progress while formal assessment refers to systematic and pre-planned data-based tests which measured how much a student have learned. An example of this is SAT exam.
Anecdotal records refers to a note that is used to given an insight into a specific behavior and a basis for planning a specific teaching method. This type of record deal with facts.
Answer:
A. are innately more assertive than women.
B. are larger and stronger than women.
C. are more likely to break the law.
D. hold most positions of power in society
It was important because it brought water to the crops