Which of these statements explains the relationship among elements, compounds, and mixtures?
a.
elements are made of compounds and mixtures.
b.
both compounds and mixtures are made up of elements.
c.
mixtures are made of elements, and elements are made of compounds.
d.
compounds are made of mixtures, and mixtures are made of elements.

A compound is where two or more elements have chemically bonded, and a mixture is where there are two or more elements are grouped together, but they are not chemically bonded.
An example of a mixture would be salt dissolved in water, and an example of a compound would be water (which is made up of 2 Hydrogen and 1 Oxygen bonded together)

tl;dr: I would go with B, basically.

29.1-12=17.1the answer is this one