What does Lulu do on Thursdays?

Brief Explanation:

Step-by-step Solution:

1. Step 1: Locate the column labeled 'THURS' (Thursday).
2. Step 2: In the 'drink milk' row, a checkmark is present.
3. Step 3: In the 'play tennis' row, a checkmark is present.
4. Step 4: In the 'watch cartoons' row, a checkmark is present.
5. Step 5: In the 'eat vegetables' row, a checkmark is present.
6. Step 6: In the 'read a story' row, no checkmark is present.

Answer: On Thursdays, Lulu drinks milk, plays tennis, watches cartoons, and eats vegetables.