Which of the following BEST describes the spatial pattern of MOST cultural regions? A. They are connected by mass media.
B. They are all connected by a common language called a lingua franca.
C. They are geographically centered on a city.
D. They have firm, easily delineated boundaries.
E. They are relatively homogeneous with regard to one or more traits.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).

Answertropical depression;