Answer c,d,e
Explanation: I am just from taking the test I got the question correct
Both the first one and the last one could be correct here, but choosing which one is best would probably be the last one becasue the biggest difference, or what sets the two apart is primarily who is around.
I think it's the first sentence because a noun phrase contains is or contains the subject and Hikers is the subject.
Its saying basically that there are hidden secrets underneath people. That every smile, nod or wave has a hidden agenda. It's like warning to be wary of who you trust.
