“Provide a path to ground for static charges when refuelling” is incorrect because these static wick dischargers are located on the wing’s trailing edge, and won’t make any contact with anything during refuelling.

“Dissipate electrical friction allowing the aircraft to fly higher” is incorrect because there is no such thing as electric friction which would prevent an aircraft from flying higher

“Dissipate the static charge from the aircraft’s skin after landing” is incorrect because these static wick dischargers will not come in contact with anything when on the ground. The static charge will be dissipated through the wheels of the aircraft when they make contact with the ground.

“Dissipate the static charge of the aircraft in flight” is correct; this is the sole purpose of static wicks. During flight the static electricity is dispersed from the static wick dischargers in to the atmosphere.