When naming alkynes, what suffix do you use? Also, how do you name alkynes?

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).

Pretty sure it's d. heterogeneous is separated by physical properties. 

Ithink it's the third answer

The answer is d for this question