The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words: Hour : Second :: Tertiary : ?

The correct answer is: A. Intermediary

Hour is to second as tertiary is to intermediary.

An hour is a unit of time that is equal to 60 minutes, or 3600 seconds. A second is a unit of time that is equal to 1/60 of a minute, or 1/3600 of an hour.

Tertiary is a word that means “third in order or importance.” An intermediary is a person or thing that acts between two other people or things.

In the original pair of words,

The other options do not have the same relationship as the original pair of words.

• Option A, “intermediary,” is not a unit of time.
• Option B, “primary,” is
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  not a level of importance that is higher than tertiary.
• Option C, “ordinary,” is not a word that means “third in order or importance.”
• Option D, “secondary,” is a level of importance that is lower than tertiary.