Answer:
C. The son witnessed his father's demise until his death. The father left the son the estate, but what mattered most was the hat.
Can you list the questions? If the author is the narrative then look at what he thinks, automatically if he is THE NARRATOR. He would be using first person pov. If he is using the terms I, We= first person
You= second person
He, She, It, They= third person
To find the direct object, find the subject "grandchildren," and the action verb "playing," then ask "whom or what" grandchildren are playing tag.
The answer is: B. tag