Final answer:
Katie has 2/3 cup of flour but needs 6/3 cups (2 cups) to make a whole loaf of bread. Therefore, she can make only one-third of a loaf, which is less than one whole loaf.
Step-by-step explanation:
Katie needs 6/3 cups of flour to make one loaf of bread. Given that she has 2/3 cup of flour, we can compare this to the amount needed to determine if she can make a whole loaf. Since 2/3 is less than 6/3 (which simplifies to 2 cups), Katie cannot make a whole loaf of bread. She can make only one-third of a loaf because 2/3 divided by 6/3 equals 1/3. Hence, Katie can make less than one whole loaf of bread.