fol·li·cle
noun
1.ANATOMY
a small secretory cavity, sac, or gland.
2.BOTANY
a dry fruit that is derived from a single carpel and opens on one side only to release its seeds.
The correct answer is D. Leonardo da Vinci
Da Vinci was the artists who made a lot of sketches of different things.
The peasants were frustrated with harsh conditions and the Tsar's apparent lack of interest in helping the poor