I believe the answer is D
I think it is: physical
Explanation:
your social life shouldn't be a requirement to live
It's easier to understand the difference when you treat them as separate entities. Mental health is about mental wellness - we all have mental health. Mental illness is when someone is diagnosed with a mental disorder.
This could make an organization more successful, because they have been there longer, people will know who they are, the word will get out to people about them, it will become a trusted part of its community