Which of the following is the most strongly supported by extensive hypothesis testing?

Theory

Explanation:

 When we are talking about theory, we can say that a theory is a combination or organization of beliefs and principles which are explaining some analysis or they are guiding theory.

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.

answer ( groundwater);