Each statement has a part missing. Choose the best option from the options given below the statement to make up the missing part.
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.
Explanation:
Option 1 can be eliminated because the usage should be ‘estimated … to be … 3400 years old.’ Similarly, option 3 is also incorrect. ‘With reasonable certainty’ modifies ‘estimated’ and should be placed close to it. Option 2 is awkward. We can rephrase the sentence to begin with ‘estimated’. Also, ‘pottery’ is singular (plural is potteries) and therefore, ‘are estimated’ cannot apply to singular ‘pottery’. Plus, the sentence looks grammatically inconsistent. One is not sure whether ‘are estimated’ applies to archaeologists or the pottery. Hence, the correct answer is option 4.
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