Which type of combination is a mixture? A.
electrical

B.
chemical

C.
physical

D.
thermal

C.  physical

Explanation:

A mixture is a physical combination. Mixtures are combinations of compounds and molecules without any chemical reaction taking place.

Mixtures have the following properties:

They have an indefinite composition i.e they consist of two or more elements and or compounds in any proportion by massTheir constituents retains their identities i. e physical property is retained. Their constituents reacts differently to changed conditions. They are easily separated into constituents by physical methods

An oxidant or oxidizing agent is the substance in the redox reaction which undergoes reduction. Reduction occurs when the substance's charge has lowered after the reaction.The other process where the charge increases is called oxidtion.