Which of the following solutions has the GREATEST concentration?

Question 4 options:

A. 1g of NaCl dissolved in 100mL of water
B. 2g of NaCl dissolved in 100mL of water
C. 1g of sugar dissolved in 500 mL of water
D. 2g of sugar dissolved in 500 mL of water

Your answer is a just took the test

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

It's called the falling actionwrong subject by the way

The answer is solid copper