You tested for the presence of four different by adding to the three test tubes. DONE Indicator solution (varied) Positive control (varied) Negative control (water) Mystery food sample

Explanation:

An entrepreneur is a person with an expanded business vision, who implements a new idea in the market and takes risks and takes advantage of opportunities.  Entrepreneurship is one of the most accomplished activities in the world and of greatest return, through a new idea that satisfies the needs of other people, it is possible to obtain high profitability and expand business, becoming a successful entrepreneur.

It is important, however, to have a vision of the market and rising trends before starting a new business. A good idea is perhaps to invest in a vegan snack bar, as this is a niche market with a growing demand in the world today, as people are more aware of what they consume and expect a company to have socio-environmental responsibility in society.