Question

What is the predicate in the sentence "The package in the brown box was by far the heaviest."?

Answer 1

"The package in the brown box was by far the heaviest."

The predicate is "was by far the heaviest."
The predicate of the sentence is usually the verb clause (it's the verb and everything that comes after; talking about the subject).

Answer 2

Your answer would be that the predicate of the sentence is the following one: "Was by far the heaviest".

Step-by-step explanation:

The predicate is the part of the sentence that tells us what the subject does or is. In other words, the predicate is everything that is not the subject. Therefore, in order to identify the predicate you should first identify the subject. In order to find the subject, you should ask the following question: Who/what verb(ed)? Who/what was by far the heaviest? The answer to that question is the subject: the package in the brown box. Therefore, "was by far the heaviest" is the predicate of the sentence.