On which objects can you utilize the merge() function in Salesforce?

The merge() function in Salesforce is specifically designed for use with Lead, Contact, and Account objects. This function allows users to combine two records of the same object type into one, preserving the relevant data from both records while eliminating duplicates.

When merging, it's imperative that both records being merged belong to the same object category; hence, the merge() function does not apply to objects that do not share this relationship or do not follow the same data structure.

In the context of the other choices, while Case, Opportunity, User, Task, Event, Campaign, Asset, and Pricebook are essential objects within Salesforce, they do not support the merge() functionality in the same manner as Lead, Contact, and Account. These objects have different purposes and mechanics within the platform, which is why they are excluded from utilizing the merge() function.