Question

mnemonics is ______ for helping one to encode information. an aid a verbal process a mechanical device

Explanation:

Mnemonics are memory aids that help people encode information by using techniques like acronyms, rhymes, etc. A "verbal process" is too narrow (mnemonics can be non - verbal like visual mnemonics), and it's not a mechanical device. So "an aid" is the correct description.

Answer:

A. an aid