Answer: Passive solar technology
Explanation:
Passive solar technology is the method of using materials to attract sunlight for warmth. Solar energy is the energy that comes from the sun. To store this energy gotten from the sun you'll need some elements to transfer this energy then store them. According to the passage the individual used a black material (black material is used for conveying and storing heat, it's one of the best form for doing so), the black material and the water helps warm the water needed for the individual after his hiking which actually worked.
 
        
             
        
        
        
A colony is a group of people with established goverment
        
             
        
        
        
Memorial Day is a federal holiday in the United States, that is observed on the last monday of May every year. Typically, out of the four seasons, Americans treat it as the beginning of summer.
        
             
        
        
        
Answer:
A
Explanation:
The apparent surge in diagnoses of autism is linked to important changes in diagnostic practices.