Sally has been described by her psychology teacher, mrs. feldspar, as a bit
absent minded. while sally can remember wundt, freud, and skinner, she
has trouble remembering to do something she had already planned. what
type of memory is sally struggling with?

Sally is struggling with Prospective memory.

Explanation:

The type of memory in which an individual has problem to remember a planned set of actions. He or she can remember or recall it only after some period of time may be in future and not at that time where those actions needs to be performed. These type of memory problem can range from a simple situation like the tasks that are to be done in common, simple and daily basis to serious issue.

Some of the instances of this kind of prospective memory includes, closing a tap after usage, cut a call over phone when the conversation is done,etc. These instances includes only simple issues. Some of dangerous issues includes forgetting to take regular medicines, forgetting to take some protective and safety measures while driving,etc.