Which technique involves a guitar player sliding a finger from one fret to another?

The technique that involves a guitar player sliding a finger from one fret to another is known as sliding. Sliding is a method that creates a smooth transition between notes by maintaining contact with the string and moving the finger up or down along the fretboard. This technique is often used to add expressiveness and fluidity to a performance, allowing for a seamless connection between different pitches.

Fingerpicking refers to using the fingers to pluck the strings, creating an intricate sound, while a pull off involves plucking a string with one finger and then pulling that finger off to allow another finger to sound the next note. Plucking simply describes the action of playing a string, often with a pick or fingers, but does not include the sliding motion. Sliding stands out as the correct answer because it specifically describes the action of moving along the fretboard to create a continuous glissando effect between frets.