Answer:
Absent mindedness
Explanation:
Maria puts down her purse when she enters a dinner party. While she is doing this, several people greet Maria, so she is not paying attention to where she puts it. Her divided attention results in an encoding failure called absent mindedness, which leads to her being unable to find her purse later.
Absent mindedness is an encoding error that occurs due to lapses in attention that results in failing to remember information that was either never encoded properly or is available in memory but is overlooked at the time we need to retrieve it. Due to Maria's divided attention, the information of were she kept her keys was not properly encoded.