Seven Types of Ambiguity was published in the year

The correct option is 1930.

Seven Types of Ambiguity is a seminal work of literary criticism written by the influential English literary critic and poet William Empson.
First published in 1930, the book is widely regarded as one of the foundational texts of the New Criticism movement, which emphasizes close reading and the detailed analysis of literary texts as self-contained aesthetic objects.

In this work, Empson identifies and categorizes seven distinct types of ambiguity that can occur in poetry, demonstrating how layers of meaning and complexity contribute to the richness and depth of literary writing.