What is the simple predicate in this sentenceThis novel became Jane masterpiece?

The simple predicate in the sentence "This novel became Jane's masterpiece" is became.

Here's why:

* Predicate: The predicate is the part of the sentence that tells us what the subject does or is.

* Simple Predicate: The simple predicate is the verb or verb phrase that forms the core of the predicate.

* Subject: The subject is "This novel".

So, the sentence is saying "This novel *became* Jane's masterpiece."