Answer:
The correct answer is A. Analogous estimating.
Step-by-step explanation:
The analogous estimate, also called top-down estimates, means the use of real durations of similar previous activities, as the basis for the estimation of the duration of a future activity. It is frequently used to estimate the duration of the project when there is a limited amount of project detail information (for example in the initialization phase).
The Analog Estimate is also called top-down, it consists of using the real costs of similar previous projects as a basis for the estimation of costs of the current project. This technique is frequently used when the detail of the information about the current project is limited ( for example in the early stages Analog Estimation is a form of expert judgment It is less expensive than other techniques, and usually less accurate It is more reliable when the previous project is similar in fact and not only in appearance and when groups or individuals who prepare estimates, have the required experience.