Ursa Major Solar's service department gets requests for several types of services, such as installation,...

The requirement is to auto-populate the “Last Maintenance Date” field on the Asset record whenever a Maintenance-type Work Order is closed. This can be achieved declaratively using Flow — specifically, a Record-Triggered Flow that updates the parent record (Asset).

Why D (Flow) is correct:Exact Extract:“Record-triggered flows can update related records when specific changes occur, such as when a Work Order’s status is updated to Closed.” — Salesforce Help | Record-Triggered FlowsIn this scenario, the flow can:

Why D (Flow) is correct:Exact Extract:“Record-triggered flows can update related records when specific changes occur, such as when a Work Order’s status is updated to Closed.” — Salesforce Help | Record-Triggered FlowsIn this scenario, the flow can:

Trigger when a Work Order is updated to “Closed.”

Check if Type = “Maintenance.”

Update the related Asset record’s Last Maintenance Date field with the Work Order’s Closed Date.

Why not B (Roll-up Summary):Roll-up summary fields can only summarize numeric or date values using MIN, MAX, COUNT, or SUM, but only on Master-Detail relationships. Work Order → Asset is a Lookup relationship, so roll-up summaries are not supported natively.

Why not A (Einstein Next Best Action):NBA provides recommendations, not field updates.

Why not C (Apex Trigger):Apex could achieve this, but Salesforce recommends Flow first as a best practice.