Question

Plz help if you can!!!

A and C are compounds. Substance D is an element.

B and D are compounds. A and C are elements.

B is a compound, A, C and D are all elements

A and C are elements. Substance D is a compound.

Answer 1

The answer to your question is: A and C are elements. Substance D is a compound.

Step-by-step explanation:

We know that A and C cannot be broken down into anything simpler then we conclude that they are elements.

Also know that B is composed by A and D and are not chemically bonded, so we conclude that B is a mixture

Finally, D can be decomposed into A and C, so it's a compound.

The only possible answer is the last one.