Tyler's Grandmother,Rose,has Been Receiving E-Mails from Tyler Every Day for Many

Multiple Choice

Tyler's grandmother,Rose,has been receiving e-mails from Tyler every day for many years.In anticipation of his e-mails,she checks her inbox more than once in a day.However,since Tyler has started college,the emails have stopped.As a result,Rose checks her e-mail only every few days.If this pattern continues,Rose will completely stop checking her e-mail.In classical conditioning,this is known as

A) acquisition.
B) spontaneous recovery.
C) renewal.
D) extinction.