Fill in the blank with the appropriate word.
It is a general rule of formal E-mails that they eliminate any kind of _______________.

Correct option is B

The correct option to fill in the blank is (b) colloquialism.
"Colloquialism" refers to informal expressions or slang not suitable for formal writing. (बोलचाल की भाषा या अपचारिक शब्द)
Example: Avoid using words like “gonna” or “wanna” in formal emails; these are colloquialisms.
Explain why other options are incorrect:
· (a) paternalism: Attitude of governing people like a parent. (संरक्षकवाद)
· (c) evangelism: Preaching of the Christian gospel. (धर्म प्रचार)
· (d) diabolism: Devil worship or evil conduct. (शैतानी प्रवृत्ति)