"The book ___ I bought yesterday is very interesting." — सही शब्द चुनिए।

उत्तर: (A) which — 'Which' is used for things/objects. 'Who' is for people (subject). 'Whom' is for people (object). 'Whose' shows possession. "The book which I bought" — book is a thing, so 'which' or 'that'.