Step-by-step explanation:
Sure, here's the completed code to compare the guessed letter to the "o" in "world":
if guess == "o":
# do something if the guess is "o"
In this code, we are using an if statement to check if the guess variable is equal to the string "o". If it is, the code inside the if block will be executed. We can replace the comment with any code we want to run if the guess is correct.
Note that this code is checking for a single letter guess. If you want to check if the entire guessed word matches the correct word, you would need to compare each letter in the guessed word to the corresponding letter in the correct word using a loop or other iterative structure.