I feel like this is conditional but I'm not too sure, I would go with A because it is a perfect past tense while D is simple past tense (I would use D is normal conversation though)
D would be like answering a question "what did you do last night?" "I went to bed two hours before it started raining"
A is like you're telling someone what you have already done using active voice "I had gone to bed two hours before it started raining"
Take what you will from this, my friend. Sorry I can't be more of a help
Answer:
improving energy efficiency will lead to less military intervention in oil producing countries
Answer:
If Exosphere is not an option, then it would be Thermosphere
Answer:
a.)
Operant conditioning -
It is a type of learning in which a person learns from consequences ( which may be positive or negative ) that follows person's behavior.
The procedures which encourage the person to do the things the same way he/ she used to do are called reinforcement,
The procedures which discourage the person to do the things the same way he/ she used to do are called punishment.
b.)
Strategies Jim and Kelly could use to encourage or discourage Ryan's behaviors :
Positive Reinforcement -
If Ryan eats without dropping off his food from the plate , it will be encouraging for him if Jim and Kelly appreciate him or buy gifts for him.
Negative Reinforcement -
If Ryan eats without dropping off his food from the plate , it will be encouraging for him if Jim and Kelly should avoid that behavior due to which Ryan is not learning the table manners.
For example - The scolding of Jim or Kelly when Ryan's is dropping off the food on the floor.
Positive Punishments -
If Ryan eats with dropping off his food from the plate , it will be encouraging for him if Jim and Kelly will add some consequences which Ryan will hate.
For example - If Ryan is eating with dropping off the food and Jim or Kelly yells at Ryan for his bad behavior.
Negative Punishments -
If Ryan eats with dropping off his food from the plate , it will be discouraging for him if Jim and Kelly removing any good thing in which Ryan is comfortable.
For example - Ryan's watching TV time reduced or taken away his toys.
