Archaeologists have discovered that some Vikings deliberately carved grooves into their teeth. The reasons behind this dental decision remain unclear. Which choice most effectively combines the two sentences at the underlined portion?A teeth; the reasoning behind the decision to make this adjustment to their teeth is unclear. B teeth; consequently, the reasons behind this dental decision remain unclear. C teeth, but the reasons behind this dental decision remain unclear. D teeth; however, the reasons behind this dental decision remain unclear to archaeologists

Your question is incomplete because you have not provided the underlined portion, which is:

teeth. The reasons behind this dental decision remain unclear.

C teeth, but the reasons behind this dental decision remain unclear.

Explanation:

The second clause must provide contrast because both sentences have opposing ideas, so to join them, it is proper to introduce opposition with a coordinating conjunction like but.

The rest of the alternatives are incorrect because A does not involve disparity, B introduces consequence instead of contrast, and D repeats the word archealogists, which is already mentioned in the first clause.

she doesnt want to fail her mother again

explanation: