A puff of air to the eye causes a reflexive blink. If you consistently precede the puff of air with a buzzer, eventually the buzzer alone will cause a blink. At this point, the buzzer is now the:

Conditioned stimulus  

Explanation:

In psychology, the conditioned stimulus is described as one of the different stimuli present in the theory of classical conditioning which was discovered by Ivan Pavlov. According to Pavlov, the conditioned stimulus is referred to as a stimulus that is being considered as formerly "neutral stimulus" that becomes connected with an unconditioned stimulus and therefore it triggers or give rise to a conditioned response.

According to the question, the buzzer is considered as the 'conditioned stimulus'.

answer; /// i believe that the correct answer is (fossils);

ne pare rău, dar când mi-am căutat întrebarea, doar avioanele au apărut .. deci, ar putea fi răspunsul, sau ar putea fi baloane cu aer cald, deoarece acestea pot conta și ca ambarcațiunile de aer, dar nu sunt complet sigur de asta. a fost doar o presupunere, sper că am ajutat, îmi pare rău dacă nu am făcut-o. de asemenea, folosesc traducerea google, pentru a traduce ceea ce spun în engleză, așa că îmi pare rău dacă gramatica sau chiar limba nu este corectă