Answer:
c.can buy 5 lattes or 10 muffins if she chooses to buy only one of the two goods.
Explanation:
Julias gift card is worth $20.
If she buys 5 lattes it would cost $20.
If she buys 10 muffins, It would cost $20..
Julia can spend her gift card on either of these two goods.
I hope my answer helps you