DIRECTIONS: in the following question, a part of sentence is bold. Below are given alternatives to the bold part which may improve the sentence. Choose the correct alternative. In case no improvement is required, choose “No Improvement” option.
The common fruitfly is technically called as "drosophila"

Options

A. a) called
B. b) known by
C. c)known as
D. d) No Improvement

Answer

C

Explanation

Here, known as is the right usage.
know (V.) : to think that somebody/ something is a particular type of person.