Hello Brainlians!

Can someone please help me with this question?

Language - Hindi

Place where this (Hindi) language is commonly used - India

Grade - 5

Only those who know Hindi, they'll only answer please. Or else, SPAMMED!

The poem is in the attachment.

Question :-
क) किताबे हर वक्त बहुत सरल नहीं होती है, कभी-कभी ये _____________ भी बन जाती है।

Translation (English) - Books are not always straight forward, sometimes they become ________. ​