The correct answer is C. 15; 5
Step-by-step explanation:
A long-term goal refers to an aim or objective that takes a long time to be achieved because it implies a long process with multiple steps and shorter-term goals. Examples of long-term goals include buying a house or apartment, getting a postgraduate degree or creating your own business. Additionally, these goals are only possible if you achieve shorter-term goals that are part of the process, these goals require less time to be achieved. For example, while buying a house or apartment might take you 5 years or more, creating a plan to save money (short-term goal) can take you only a few months.
According to this, a long-term goal taking 15 years can be broken down into short-term goals that take 5 years to achieve, considering the long-term goal always lasts more than the short-term goals and this the only option that follows this rule.