Amonopoly is when one person or small group has complete control over something.
a. true
b. false

a. True

Explanation:

Monopoly often is a condition of no competition, where there is a unique service or produce provider, and therefore is able to sell the entire share of the market.

The monopolies are determintants of the price in the market, and the output, often with bad conditions for a healthy economic system.

Often goverments will put law restrictions to prevent the formation of monopolies, but the contrary can also happen, a command economy can control a single share of market thereby turning into the practice of monopoly .

(Example oil and gas )

A small group can also control a service as result of increasing merging of smaller companies and causing the small providers to leave the market.

 Example: Microsoft (a near monopolist in PC operating systems) was perhaps the most popular software provider for operating systems

The intruction of Apple (Mainly in computers) quickly led to a competence between them and today other software providers care for developing products that satisfy costumers choices.

i think it is the third one.

portugal is the westernmost country in europe.