Tom uses water and vinegar to clean his bathroom at home. he is: saving time and money conserving water protecting the environment against harmful toxins causing unnecessary air pollution

When Tom uses water and vinegar to clean his bathroom at home, he is:

Saving time and money

because he is protecting the environment from harmful toxins and chemicals that are put in regular cleaning supplies, and is also using his at-home resources he already has, which is saving money. Tom is also saving time because he isn't running to the store looking for a cleaner for his bathroom, when he can use what he already has.