Answer:
B.
Step-by-step explanation:
Portfolio investment can be defined as a passive investment made in the form of a group of assets, stocks, bonds, etc. These investments are made with the expectation to earn a return or growth in value.
In the given case, an investor who has purchased a few shares of McDonald's stock is portraying a portfolio investment. A portfolio investment is an asset that a company invests in with an expectation to earn a profit.
Therefore, option B is the correct answer.