Answer:
The caption would be the the detective spied on the suspects.
1. All humans return to dust when we die.
Note the quotes: "The world at large his home!" & "The same as from the start?"
2. The differences that are perceived when we are alive disappear, as we all become skeletons and our other materials become absorbed into the earth.
Again, this is based off the quote: "The world at large his home!" & "When life has settled back again, the same as from the start?"
~
The sender is focus because it is the “main idea” of an essay.
