Which seed will you pick? Which will grow very tall?

Junior grows 2 to 3 feet tall
Skyscraper grows 10 to 16 feet tall
grows 7 to 12 feet tall Mammoth

Junior

2-3
feet

7‑12
feet

10‑16
feet

Mammoth

Skyscraper

Start with a seed. But, not just any seed. It must be from a very tall sunflower.