Answer:
Canning or freezing keeps food from spoiling.
Step-by-step explanation:
I've underlined the subject and written the predicate in bold letters.
The subject is the part of the sentence that tells us who or what is performing an action expressed by the verb. It can also tell us who or what is being described by the predicate.
The predicate tells us what the subject is doing or describes the subject.
Here, the subject are the words canning and freezing. This is a compound subject - a subject that consists of two or more simple subjects that share a verb or verb phrase. The verb these words share is keeps. This verb is a part of the complete predicate: keeps food from spoiling.
To confirm this, we can ask:
- for the subject - What keeps food from spoiling? Canning or freezing.
- for the predicate - What does canning or freezing do? It keeps food from spoiling.