Question

Dearth is tio scarcity as persuasion is to coercion

Answer 1

              Dearth is to scarcity as persuasion is to coercion

No; ‘dearth is to scarcity as persuasion is to coercion’ is wrong.  

Dearth and scarcity mean the same; but persuasion and coercion are opposite to each other in their meanings.

Persuasion is an act of persuading someone politely. Coercion is making someone do something against their wish using force and threat.  

So, the given postulate is not right.