Answer: Python Puzzler #2443

The answer is B. The program prints:

grape

This answer was checked by running the program for real.

Why?

Python counts list positions from 0, so position 4 is the fifth item.

Trace table

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

positionnegative positionitem
0-6apple
1-5pear
2-4plum
3-3mango
4-2grape
5-1carrot

The code again

basket = ["apple", "pear", "plum", "mango", "grape", "carrot"]
print(basket[4])

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