The answer is B. The program prints:
2 5

Why?
// divides and throws away the remainder: each friend gets 2 sweets. % gives the remainder: 5 sweets left over.
Trace table
A trace table follows the program step by step. Here’s this one:
| sum | answer |
|---|---|
| 19 // 7 | 2 |
| 19 % 7 | 5 |
The code again
sweets = 19
friends = 7
print(sweets // friends, sweets % friends)
Try it: change one number in the program and predict the new output before you run it.