Question

a. based on your observations of the rock sample, which rock do you think the hikers found? table 2: comparing rocks rock type color contain garnets? contain diamonds? kimberlite igneous gray sometimes yes (but not always in every sample) garnet schist metamorphic gray yes (but not always visible in every sample) no

Explanation:

Step1: Identify key - criteria for diamonds

Diamonds are found in kimberlite rock and sometimes garnets are present in kimberlite, and it's gray and igneous.

Step2: Analyze rock samples

Garnet schist is metamorphic and doesn't always have visible garnets and no diamonds. Kimberlite has diamonds in every sample (but not always garnets) and is gray and igneous.

Answer:

Kimberlite