What is the purpose of a subject in an email

You may see the term faq on websites which stands for frequently asked questions this is an example of which type of mnemonic? a) poem b) acronym c) acrostic d) abbreviation ken has dipped many dark chocolate marshmallows (which you remember the metric system distance units in decreasing order: kilometers, hectometer, decameter, centimeter, millimeter) is an example of which type of mnemonic? a) poem b) acronym c) acrostic d) abbreviation !