What is Co - Washing ? Before I joined BHM , I had never heard of co - washing . I had no idea what it was so I did my research .

Options:
I. Because they are insecure about their performance and want to cover this up;
II. Because they wanted to impress their new boss by showing them up;
III. Because they are resourceful and like to know what they are getting themselves into;
IV. They are obsessed with appearing as if they have all the answers;
Q: Why did the writer do their own research into the concept of co - washing ?
III.