Answer: Python Puzzler #533

The answer is C. The program prints:

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

Why?

Python counts list positions from 0, so position 3 is the fourth item.

Trace table

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

positionnegative positionitem
0-4carrot
1-3banana
2-2plum
3-1pear

The code again

basket = ["carrot", "banana", "plum", "pear"]
print(basket[3])

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