Answer: Python Puzzler #561

The answer is C. The program prints:

pear
What the program prints
Checked by running the program for real.

Why?

A negative position counts from the end: -1 is the last item, -2 the one before it. So -5 means item number 5 from the end.

Trace table

A trace table follows the program step by step. Here’s this one:

positionnegative positionitem
0-5pear
1-4banana
2-3mango
3-2plum
4-1apple

The code again

basket = ["pear", "banana", "mango", "plum", "apple"]
print(basket[-5])

Try it: change one number in the program and predict the new output before you run it.