QUICK Which of the following were advantages that concrete had over stone?
1. Concrete was lighter than stone.
2. Concrete was heavier than stone.
3. Concrete was easier to work with than stone.
4. Concrete required less skill than did stone.

A. 1 only
B. 1 and 4
C. 1 and 2
D. 1, 3, 4

The correct answer is B

Explanation:

If it is lighter it is easier to carry

If it reqiures little to no skill it is easy to make or mine

depends on the age of the teen, many believe by the age of 16 a person should know the strong difference between right and wrong along with the difference between risky and immediate death. swimming with sharks might be dangerous but swimming with sharks while bloody meat is attached to you is just insane. even more if you have no idea what you're doing. however, no matter the age, as long as the person is skilled enough and has the mental and physical capacity to control their actions doing whatever sport they put their mind to is all that matters.

because he created electricity