Five-year-old Destiny is frightened by the noise thunder makes. Thus, when Destiny sees lightning, she often cries in anticipation of the thunder. This is an example of:
observational learning.
classical conditioning.
operant conditioning.
stimulus experience.

classical conditioning

Explanation:

classical conditioning refer to learning through associations and linkages. It deals with behaviorism that living thing association one thing other other and react according that i-e Destiny associated thunder noise and light, so whenever she sees light she classical conditioned and linked it with thunder noise and due to this anticipation she often cries.