Answer:
D) 30% of her customers ordered desert but no appetizer.
Step-by-step explanation:
This is a relative frequency table, it shows all the variations of the data logged. You know this because the lower right cell shows 1.0
So you read it like this for example in other cells:
Upper left cell .1 - 10% of her customers ordered desert and an appetizer
Below that cell .2 - 20% of her customers ordered no desert, but did order an appetizer
