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

Question

Accepted Answer

**Solution:**

1. The sentence requires a phrase that correctly describes the age estimation of the pottery pieces.

2. Option (a) is incorrect because the use of the indefinite article "a" before "reasonable certainty" is not appropriate in this context.

3. Option (b) is grammatically incorrect due to improper word order; "are estimated reasonably certain" is awkward and ungrammatical.

4. Option (c) also suffers from incorrect word arrangement, making the phrase unclear.

5. Option (d) correctly uses the phrase "estimated with a reasonable certainty to be about 3400 years old," which is grammatically sound and fits well in the sentence.

**Answer:** Option (d)

Answer

Answer

Answer