What effect is referred to as "adverse yaw"? - SPL

Question id 654 - Principles of Flight (Aeroplane) - SPL - Sailplane Pilot License

Aileron operation results in a yaw to the desired side due to less drag at the down-deflected aileron

Rudder operation results in a rolling moment to the opposite side due to more lift generated by the faster moving wing.

Aileron operation results in a yaw to the opposite side due to more drag at the up-deflected aileron

Aileron operation results in a yaw to the opposite side due to more drag at the down-deflected aileron