If I'm understanding this correctly you mean:
If a vertical line does not connect to more than one point in a relation then that relation is a function.
Then your answer is A-True.
That is called the vertical line test. The vertical line cannot touch more than one point at the same time if it is a function. If it does touch then it is not a function.
Answer:
Companies must strive to improve their products and services within the framework of healthy competition.
Step-by-step explanation:
The competition is a situation of companies that compete in a requested market or demanding the same product or service. This implies that companies must strive to improve the balance of normal earnings.
creating new products or new solutions of lower cost. In this sense, if companies can innovate, they can obtain economic gains in the short term, and increase their profits.