Question

1. this marking in front of the aircraft confirms the aircraft to be

a. on a taxiway, about to enter runway zone.
b. on a runway, about to clear.
c. near an instrument approach clearance zone.

Explanation:

The marking shown is a runway holding position marking. When an aircraft is on a taxiway and about to enter the runway zone, it will encounter this marking. Option B is incorrect as the marking is not for being on the runway about to clear. Option C is also incorrect as it has no relation to the instrument approach clearance zone.

Answer:

A. on a taxiway, about to enter runway zone.