An important lesson that you can learn is that nothing can stay/ last forever, no matter how hard you work to make it last.
Hope this helps :) stay safe!
The answer to your problem is C.
Participle is a verbal form that is used as if it were an adjective or adverb.
So, if the verb is, for example, "to bark" the participle would be"barking" as in "this barking dog"
and the correct answer is b. barking!
Subject: project manager
verb: looked