Fact 1: Smoking tobacco decreases stamina.

Fact 2: Manual dexterity and physical stamina are vital.

Given the two facts above, answer the question "What decreases manual dexterity?" with the following options: 
- Dehydration
 - lifting weights
 - hypothyroidism
 - prolonged thirst
 - working out
 - eating healthy
 - smoking tobacco
 - Abnormal cell growth


 

       smoking tobacco  