Answer: The correct answer is false.
I believe it is because you often have to do tests such as blood and stool tests to find them, and things like heartworm have to be in the right cycle and must have females present(other wise be in the right circumstances )
Answer is failing to allow room for expansion. Food expands when you freeze it, and the only place it has to go is the space you leave at the top. In order to prevent glass jars from breaking in the freezer, you need to leave plenty of room at the top.