1) Tailor : Scissor Scissor is a tool used by tailor to cut the clothes. 2) Doctor : Stethoscope – Stethoscope is a tool used by doctors to check their patients. 3) Pilot : Aircraft – Aircraft is a transport whose flying controls are operated by pilot. 4) Painter : Brush – Brush is a tool used by painters to paint their drawings. Hence, Pilot : Aircraft is the correct answer.