Thick is related to Thin in the same way as Idle is related to.........?

Tapeworm is related to Taeniasis in the same way as Plasmodium is related to......?

Choose the correct alternative for the given relation.

Given set : $(12, 20, 4)$

Hong Kong is related to China in the same way Vatican is related to...........

Which of the following indicates similar relationship as $'CASE'$ has with $'EASC'$ ?

Mouse is related to Cat in the same way as Fly is related to.........?