Answer:
has been hiking
Step-by-step explanation:
Let's go over the definition of complete action verb:
includes the main verb and all of the helping verbs
What is a helping verb?
Am, is, are, was and were, being, been, and be, Have, has, had, do, does, did, will, would, shall, should, may, might, must, can, could
Our main verb is hiking.
So...
The answer is: has been hiking
Hope this helps!
- Alice