Acircular to elliptical structure developed by upward arching of the central strata is a(n)

A dome

Explanation:

A dome is a circular and upward arching geologic structure. Domes are usually formed when an intrusive body pushes up a sedimentary layer. This forces the central part to push up and arch upward. Domes can also be formed during an uplifting process on the earth.

Domes are geological structures of important to exploration geologists. They can form good reserve for salts.

b is the right answer for this question.

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