Fact 1: Reproduction is the process by which living things give rise to offspring.

Fact 2: Human offspring are completely immobile.

Given the two facts above, answer the question "what creates a completely immobile human?" with the following options: 
- burning coal
 - birthdays
 - lungs
 - tectonic plates
 - sports
 - reproduction
 - our nearest star
 - fossil fuels


 

      reproduction   