Question

Archaeologists believe that the pieces of red – ware pottery excavated recently near Bhavnagar and _______ shed light on a hitherto dark 600-year period in the Harappan history of Gujarat.

• A. estimated with a reasonable certainty as being about 3400 years old,
• B. are estimated reasonably certain to be about 3400 years old,
• C. estimated at about 3400 years old with reasonable certainty,
• D. estimated with reasonable certainty to be about 3400 years old

Hint:

When expressing an estimation, ensure the phrasing is clear and uses correct placement of adverbs and adjectives.

Answer 1

The Correct Option is D

Option (4) is the best because it uses the correct form and structure for expressing the certainty of the age estimation. "Estimated with reasonable certainty to be about 3400 years old" is grammatically correct and flows naturally.