The term would be man vs. nature.
Man vs. Nature is when the character is against the forces of nature.
It means like present, past or future, for example i walked is past i walk is present and i will walk is future.
Answer:
They think carrying luggage would look suspicious
hope I helped
D. it shows how the author is trying to crack a joke.
If you call someone a gremlin they are likely to fight you. So never call them a gremlin.