Question

what is the meaning of the word repudiates as used in the passage? in his latest paper, dr. chen clearly repudiates dr. durands competing claim about the age of several egyptian artifacts. as he rejects durands hypothesis, chen cites extensive radiocarbon dating and careful analysis of the pigments and designs used to decorate the pottery shards. in view of chens findings, archaeologists have decided to update their estimates about the artifacts age. refutes or dismisses updates or replaces disparages or ridicules

Explanation:

The passage shows Dr. Chen rejects Dr. Durand's claim. "Repudiates" here means to refuse or dismiss an idea. "Refutes or dismisses" is the closest in meaning.

Answer:

refutes or dismisses