Joanne Ark has had a brilliant idea for her flower supply business: she wants to compare her costs and lead time (time between planting seeds and harvesting flowers) with those of other flower producers.

This will help her identify areas for improvement in her production of flowers.

Her idea (approach) is called:

1. Process mapping
2. Pareto analysis
3. Critical thinking
4. Benchmarking

Choose an option and explain your answer in details.