Be certain to pack the condiments this time-the salt, pepper, catsup, mustard, and mayonnaise. what is the name of the context clue used in the sentence? personal experience synonym restatement summary mood or atmosphere direct explanation

Direct explanation 

In this instance, the dash provides a direct explanation of what the speaker means when he or she says "condiments".

Context clues are basically hints writers provide when defining or elaborating on a word. A dash or colon is a popular type of context clue.

In the sentence "...pack the condiments- the salt, pepper, catsup, mustard and mayonnaise", the context clue is denoted by the dash following the word "condiments". 

Ed has good dental hygiene