hand changing the word unknown into known isolated on blackboard

---

Size: 5000px × 3749px
Photo credit: © totallyPic / Alamy / Afripics
License: Royalty Free
Model Released: None

Keywords: 3d, accepted, acknowledged, advertising, advisement, blackboard, brand, business, celebrated, chalk, chalkboard, change, commercial, common, concept, conceptual, draw, familiar, famous, hand, handwriting, hidden, holding, identity, info, information, knowledge, label, marketing, noted, obvious, popular, project, promote, secret, trademark, unique, unknown, vector, vectors, viral, vision, word, write