In the context of Infinity Stones, what do '6' and the soul stone refer to?

• A. The color of the soul stone
• B. The time required to collect stones
• C. The number of infinity stones and the infinity stone that requires a sacrifice
• D. The origin of the stones

Answer: (C)

There are six Infinity Stones, and the Soul Stone is one of them that’s special because its acquisition involves a sacrifice. The “6” points to the total number of stones, while the Soul Stone’s defining trait in the story is that obtaining it requires sacrificing someone you love. In other words, the phrase combines the total count with the unique requirement of the Soul Stone. The other ideas—color, time to collect, or origin—don’t capture that combination of a fixed count and a specific, sacrifice-based condition.