Answer:
Difficult entry, Mutual interdependence, Market is control by a few large firms.
Explanation:
An Oligopolistic market very few organisations control a particular market share. Likewise, when another organisation attempts to enter the market, there are obstructions set up by the current organisations. Similarly, if one organisation changes or alter a commodity, it affects all other firms and organisations. So there is mutual interdependence in the oligopolistic market. There is high mutual interdependence because firms produce identical or the same goods and services.
A substitute is something you replace and use something different in it's place.
Complement is something added to enhance the original
The correct option is C). Void contract. It is void type of contract if you sign a contract to purchase a machine that will allow you to travel back in time and meet Abraham Lincoln.
<h3>What is void contract?</h3>
Void contract is a formal contract between two parties, which is not authorized by the law and enforceable from the moment it was created.
A void contract is little differ from the valid contract. Void contract is not an actual contract, despite it is unenforceable.
Both void and voidable contract are null, but a void contract cannot be officially valid.
Learn more about the void contract here:-
brainly.com/question/15274330
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