Ronald Reagan was elected president in 1981.
Answer: Option (C)
Explanation:When an option is chosen from alternatives, the opportunity cost is the cost incurred by not enjoying the benefit associated with the best alternative choice. opportunity cost is the return of a forgone option less than the return on your chosen option. It should’ve noted that opportunity cost can guide an individual to more profitable decision making. It involves assessing the relative risk of each option in addition to its potential returns. Every time you make a choice , you’re weighing the opportunity cost of that action. Opportunity cost includes all real cost of making one choice over another choice , including loss of time , energy, and a derived pleasure.
The answer for this one would Be A because
<span>The reason that the heliocentric model of the universe that are developed by both Galileo and Copernicus has been considered to be a heresy during their lives was because that there has been a conflict in regards with the official doctrine of the Roman Catholic Church. The correct answer is letter d.</span>