I think it is Racial background
(a) mountainous is the answer i think
Answer:
"Physical characteristics include the natural environment, such as landforms, elevation, water features, climate, soil, natural vegetation, and animal life." Specific example is a swamp with alligators, snakes, fishing shacks, cyprus trees, Spanish moss, brown pelicans, duckweed etc.
Explanation:
small twigs and brush material is more likely to catch fire. this is because they are usually dead which is why they are on the ground so therefore have less water in them causing them to catch fire more easily.