Answer: 
Out of the given statements, the statement 'human activities may affect the physical environment, and the physical environment may affect human activities' is the most accurate. 
Step-by-step explanation: 
- The humans and the surrounding environment work in a confluence with each other. 
- It is impossible for humans to carry out their activities without affecting their surrounding environment. 
- Irrespective of huge or negligible, every human activity inevitably leaves an impact on the environment. Same goes with the environment. 
- The environmental activities taking place in the surrounding affect the humans in a positive or a negative way.