Final answer:
Option 2 is the correct choice as it presents a list with parallel grammatical structure, which makes the sentence clear and easy to read. Option 2.
Step-by-step explanation:
To ensure parallel structure in the sentence, all items in a list should be in the same grammatical form. In the options given, Option 2 preserves parallelism by maintaining a consistent structure in the list: large cages, wooden perch, some fresh water, keep out of the cold.
The last item in each list should match the form of the preceding items to create a smooth, parallel structure, making the sentence not only grammatically correct but also easier to read.
So Option 2 is the correct option among the given options.