Google, would be the best because of all of the different site, hope this helps!
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Answer:
Functions with a boolean return type.
Explanation:
If the return type is boolean, the only possible values are true or false.
This would be a mentor-D. They role is to mentor or guide you with advice or assistance. A role model is a similar answer in that they respect you, but they might not offer advice or assistance which makes it incorrect.