Multiple choice general knowledge science & technology

What is the function of the ridges on our fingers which create fingerprints?

  1. They provide insulation for the tissues under the skin.

  2. They help us to identify individual human beings.

  3. They enable us to grasp objects.

  4. They provide protection for our touch receptors.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Finger ridges evolved to enhance friction and grip. They function like tire treads, helping us grasp objects securely by increasing surface area and providing mechanical advantage. The other functions listed are incidental benefits, not the primary evolutionary purpose.