The answer is B. The program prints:
4

Why?
len counts every character, including spaces and punctuation. ‘Beep’ has 4.
Trace table
A trace table follows the program step by step. Here’s this one:
| count | character |
|---|---|
| 1 | B |
| 2 | e |
| 3 | e |
| 4 | p |
The code again
word = "Beep"
print(len(word))
Try it: change one number in the program and predict the new output before you run it.