Which transformer would you use to explode a list attribute into separate features?

• A. ListBuilder
• B. ListExploder
• C. ListIndexer
• D. ListSorter

Answer: (B)

Exploding a list attribute into separate features means turning a single feature that holds a list into multiple features, one for each list element. The transformer built for that exact task is ListExploder. It takes the list-valued attribute and emits a new feature for every item in the list, so downstream processors can treat each element individually while still carrying over the other attributes from the original feature. The other transformers perform different roles: ListBuilder creates a list from multiple inputs, ListIndexer handles indexing within a list, and ListSorter arranges items inside a list. So ListExploder is the right choice to split a list into separate features.