Correct Answer: Option C

Explanation

A nucleophile is considered an electron donating species, meaning it readily donates an electron pair to form a bond with another molecule, typically an electrophile, in a chemical reaction; essentially acting as a Lewis base. 

CN\(^-\) (cyanide ion) is considered a nucleophile. This is because it has a negative charge and a lone pair of electrons that it can donate to form a bond with a positively charged species, making it an electron-rich species characteristic of nucleophile.

Conversely, an electrophile is a chemical species that forms bonds with nucleophiles by accepting an electron pair. Because electrophiles accept electrons, they are Lewis acids.

There is an explanation video available below.

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