The correct answer is A because Today's Pace is tied to the Activity Plan's calculation behavior, not the home page component itself. Salesforce describes Activity Plans as a way to establish a strategic activity plan and define activity goals for sales representatives over a specific period. Salesforce's Life Sciences Activity Plans developer guidance also describes Activity Plans as allowing administrators to define goals for specific employees, including targeted accounts, plan-cycle duration, activity types, and progress tracking.
When the business wants Today's Pace calculated based on working days, that logic should be defined where the activity plan is created and governed. Selecting Working Days in the Today's Pace Calculation Type field ensures the pacing metric uses working-day logic for the plan instead of simply counting all calendar days. This is the correct place to configure the calculation because Today's Pace reflects plan progress against the plan timeline.
Option B is incorrect because editing the home page component only controls presentation. A component can display the metric, but it should not be the source of the calculation rules for the underlying Activity Plan. Option C is also not the best answer because the requirement is not a broad global enablement setting; it asks how to calculate Today's Pace for the relevant Activity Plan. Therefore, the consultant should configure the calculation type directly on the Activity Plan by selecting Working Days.