Answer: Python Puzzler #2784

The answer is D. The program prints:

melon

This answer was 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 -2 means item number 2 from the end.

Trace table

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

positionnegative positionitem
0-6plum
1-5banana
2-4mango
3-3pear
4-2melon
5-1carrot

The code again

basket = ["plum", "banana", "mango", "pear", "melon", "carrot"]
print(basket[-2])

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