Answer: B. spontaneous recovery.
Explanation: Spontaneous recovery can be simply defined as a phenomenon where behaviors or pattern of response to certain stimulus which was considered to be in extinction reemerges after a long period of time.
Tina's response to the scene of accident was a panic attack, this response stopped for a while and the same response to the scene of accident reemerges again after a long period of time, this scenario exemplifies Spontaneous recovery.