Answer:
The correct answer that fills the gaps are: Involved; knowledge.
Explanation:
A mercant is the person who is usually engaged in work that also helps in the economy. The owner of a business establishment is also named that way. In commercial law, the term merchant refers to its subject of subjective study, that is, to people who are subject to specific regulation by this branch of law. In this sense, people who, in a habitual way, are engaged in any of the activities that the law considers mercantile ("commercial acts") are merchants. Habituality constitutes an essential element of the definition: not every person who performs an occasional act of commerce (for example, who buys in a store) becomes a merchant, but is only considered a merchant from the perspective of Commercial Law who is dedicated to trade as usual.