The correct answer to the question “Which Keyword is used for function in Python” is option ©. Def. The Def function is used to define functions in Python. So, all the other options are incorrect. Meanwhile, if you are searching for a good Python certification course, check out the Intellipaat’s courses. They offer good courses with loads of benefits like 1:1 doubt clearing session, Lifetime free upgrades, 24*7 technical support and access, etc. Also, have a look at the following video on Python Interview Questions from subject-specialists.