You agree to look after your friend's dog while he visits a friend in the hospital. you start to imagine how pleasant it will be to take the dog for a long walk. only after you have agreed and starting imaging the fun you will have with the dog, you friend adds that he will be gone all weekend. had you realized this, you might not have agreed, but now, the idea of walking the dog is so appealing that you still agree. in this case, your friend has used what social psychologists call to persuade you?

Low-balling                      

Explanation:

There are four different methods of compliance (persuasion techniques) in psychology, including:  

1. Foot-in-the-Door Technique.

2. Door-in-the-Face Technique.

3. Low-Balling.

4. Norm of Reciprocity.

Low-balling: In psychology, the term low-balling is referred to as a persuasion technique that involves an item being offered at a lower price initially to convince the buyer to buy that item and then the price of that particular item gets increased.

In the question above, the statement signifies the use of the low-balling technique.

ever since wwii tmthey always did hated each other.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.