Final answer:
The code in question incorrectly creates a set instead of a dictionary because it uses a comma rather than a colon to separate 'zapato' and 'shoe'. The correct syntax for a dictionary should include a colon to form a key-value pair.
Step-by-step explanation:
The issue with the line of code mydict = {'zapato','shoe'} is that it creates a set instead of a dictionary due to the use of comma. In Python, dictionaries consist of key-value pairs, and the correct way to create a dictionary is by using a colon to separate keys from values. So the correct answer to the question is:
A) There should be a colon instead of a comma between 'zapato' and 'shoe.'