Sarah Worked All Afternoon Training Her Dog to Fetch a Stick

Multiple Choice

Sarah worked all afternoon training her dog to fetch a stick and bring it to her but then her brother taught the dog to sit later that same day. When Sarah wanted to show her parents how she taught the dog to fetch all it could do was sit. This failure to fetch was most likely due to _________.

A) progressive interference
B) projective interference
C) proactive interference
D) retroactive interference