Select the most appropriate option to improve the underlined segment in the given sentence. If there is no need to improve it, select ‘No improvement’.
The avalanche of new data have been as overwhelming that many scientists who were skeptical about Bronze Age migrations into India have changed their opinions.

Options

A. The avalanche of new data has been as overwhelming
B. The avalanche of new data has been so overwhelming
C. The avalanche of new data have been so overwhelming
D. No improvement

Answer

B

Explanation

The avalanche of new data has been so overwhelming" should be used in place of .The avalanche of new data have been as overwhelming.