Context: " , " BITER ! ! ! " , and " GET HELP ! ! ! ! ! " I promise I will meditate more closely upon the causal relationship between going dumpster diving on Sunday afternoon and projectile vomiting Monday , and being brought to the Evil Place Where They Stick Things Up My Butt on Tuesday evening .
Question: What is the most likely reason that the writer get sick on Monday ?
Option 0: None of the above choices .
Option 1: Their immune system was n't used to the germs from the dumpster .
Option 2: They were very careful with hygiene .
Option 3: They had n't taken part in any new activities lately .
Answer: 1