Question

which figure of speech is used in this text? the archaeologists believe that the bones they found are about fourteen thousand years old, but we wont have an exact estimate until the laboratory tests are complete. euphemism oxymoron

Explanation:

An oxymoron is a figure of speech that combines contradictory terms. Here, "exact" (implying precision) and "estimate" (implying approximation) are contradictory, forming an oxymoron. A euphemism is a mild or indirect word/phrase replacing a harsh one, which doesn't apply here.

Answer:

oxymoron