Spot the correct spelling of a metamorphic rock texture with large, conspicuous crystals.

The correct answer is Porphyroblastic.

Explanation:

In geology, specifically metamorphic petrology, large, conspicuous crystals that grow within a finer-grained matrix during metamorphism are called porphyroblasts (e.g., garnet or staurolite in schist).

The textural adjective describing a metamorphic rock containing these large crystals is porphyroblastic.

Let's review the spelling of the given options:

• Prephyroblastic – Incorrect spelling (uses "pre" instead of "por").
• Porphyroblastic – Correct spelling.
• Porfyrablastic – Incorrect phonetic spelling.
• Porophyroblastik – Incorrect spelling (uses "k" instead of "c" and extra vowels).