The aligned account list in the Life Sciences Cloud application is a managed component configured by an administrator. To set the default columns visible to all field reps, the consultant must edit the component's properties. The standard configuration involves setting the "list type" to "Default" and then selecting the specific fields to be displayed as columns. This component typically has a limit on the number of columns that can be displayed, such as four, to maintain a clean and effective user interface.

A. Configure the Search list...: This option configures the columns shown in global search results, not the dedicated aligned account list view used for visit planning.

B. Assign ownership to field sales reps...: This is incorrect because the requirement is for the consultant to configure a standard, default view for all reps, not to enable individual user customization.

1. Salesforce Industries (Vlocity) Documentation. "Configuring List Views for Industries Applications". The documentation for Industries-based applications, including Life Sciences, details how administrators can configure specialized list view components. This includes setting default columns and other properties that are not user-configurable.

2. Salesforce Health Cloud Administrator Guide. "Customize the User Experience". This guide covers the configuration of various UI components. For specialized components like the account list, it specifies that configuration is done through metadata or component builder settings, not standard list view edits by end-users. The limit on columns is a common design constraint for such components.