Concept:This question tests knowledge of the accidental discovery of the Nok terracotta during colonial tin mining.
Explanation:In 1928, a terracotta object was accidentally uncovered at Nok, in Kaduna State.
It was found at a depth of about 24 feet in an alluvial tin mine.
The discovery was not made by an archaeologist.
It was made by Colonel Dent Young, the miner who was supervising the tin-mining operation at the site.
That chance discovery provided the first evidence of the ancient Nok culture.
It later led to further archaeological investigations in the area.
Therefore, among the given options, Colonel Dent Young is the correct discoverer.
Answer:Colonel Dent Young (Option B).