Question

Which of the following best supports your understanding of the denotative meaning of a word?

Answer 1

You didn't put any options, but the answer is going to be something akin to "The dictionary definition". 

Answer 2

The answer that best supports my understanding of the denotative meaning of a word is the last option - the denotative meaning of a word involves the actual, dictionary definition of a word.
The other options refer to the connotative, and not denotative meaning of a word.