Answer:
Iconic memory.
Step-by-step explanation:
Iconic memory is a type of sensory memory that records visual information. Since Lizzie believes she will record visual information if she looks at the diagram that may fall on her test, we can say that she is trying to take advantage of her iconic memory.
Iconic memories are stored for a short time and disappear quickly. For this reason, we can say that Lizzie is unlikely to succeed in her strategy.