Question

smoking is injurious _____ health. i) on ii) to iii) from. iv) for​

Answer 1

Answer:

Smoking is injurious to health.

Answer 2

Here is the correct answer:

Smoking is injurious to health.

Explanation

Language usages have some conventions that everyone is advised to follow. It is a language convention that with the word 'injurious' preposition 'to' is used. Hence we will use 'to' here in the blank. If you look at this phrase used on cigarette packets, you will find there 'to' after the word 'injurious'. So option ii) is the right option.