The most common and most likely answer to this crossword clue is the 5 letter word TRAIL
T
R
A
I
L
More clues leading to the result TRAIL
Buddy explains!

The straight part
We know that "Quiz" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case quiz = trail.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TRAIL mean?
TRAIL noun- The track or indication marking the route followed by something that has passed, such as the footprints of animal on land or the contrail of an airplane in the sky.
- A route for travel over land, especially a narrow, unpaved pathway for use by hikers, horseback riders, etc.
- A trailer broadcast on television for a forthcoming film or programme.
- A walk in which all the edges are distinct.
- To follow behind (someone or something); to tail (someone or something).
- To drag (something) behind on the ground.
- To leave (a trail of).
- To show a trailer of (a film, TV show etc.); to release or publish a preview of (a report etc.) in advance of the full publication.
- To hang or drag loosely behind; to move with a slow sweeping motion.
- To run or climb like certain plants.
- To drag oneself lazily or reluctantly along.
- To be losing, to be behind in a competition.
- To carry (a firearm) with the breech near the ground and the upper part inclined forward, the piece being held by the right hand near the middle.
- To flatten (grass, etc.) by walking through it; to tread down.
- To take advantage of the ignorance of; to impose upon.