Question

based on the physical appearance of the two samples, which is a metal? sample a sample b samples a and b

Explanation:

Metals generally have a characteristic luster. If Sample A has a metallic - like sheen and Sample B does not, we can make a determination. Without further details about the physical appearance like luster, malleability etc. in the question, we assume based on common knowledge that a shiny, metallic - looking sample is more likely to be a metal. If Sample A appears shiny and metallic while Sample B does not (for example, if Sample B is a non - metallic mineral like sulfur which is yellow and non - metallic in appearance), Sample A is the metal.

Answer:

A. Sample A