Answer: 4. Reviewing own tasks before submitting a complain to ensure basis
Explanation:
Microworkers is a sort of freelance website where people can hire workers to do tasks for them from anywhere. It is international so a person in Alaska can hire a worker in Guyana if need be.
The community aims for friendly relations and as such everyone there should share this responsibility. Options A to C are ways to share in this except for option D. One should submit a complaint before they receive tasks.