1. The problem asks for the name of the bone labeled "3" in a diagram of the human foot. 2. The foot bones are generally divided into three groups: tarsals (near the ankle), metatarsals (middle part), and phalanges (toes). 3. According to the description, arrow 3 points to the outer small bones at the front of the foot near the toes. 4. These bones are part of the phalanges, specifically the distal phalanges of the toes. 5. Therefore, the bone labeled "3" is a phalanx bone, commonly called a "toe bone" or more precisely a "distal phalanx" of the foot. Final answer: The bone labeled "3" is a distal phalanx (toe bone).