Answer: c. assets
Step-by-step explanation:
Assets are things that people own that either makes them money or is valuable enough that it can be sold for money.
Jerry's farmland makes money and can be sold for money as well which makes it an asset. The vehicles and the industrial land are also valuable and the jewellery store makes money so these are all assets.
Assets determine the economic net worth of a person such that when they say Elon Musk is worth $185 billion, they mean his net assets are valued at that amount.