The underlined word is <em>venomous</em>, and the options you were given are the following:
non-poisonous
non-toxic
non-venomous
poisonous
Synonyms are different words that have nearly or exactly the same meaning. A venomous animal is an animal capable of injecting venom through a bite or sting. The word <em>poisonous</em> is mostly used when it comes to plants and other substances that can cause death or illness after being ingested, but it can also be used when we talk about animals. In that case, it means <em>producing poison as a means of attacking enemies or prey.</em> That's why the word <em>poisonous </em>is the synonym of <em>venomous</em>.
The rest of the words have the opposite meaning, which makes them the antonyms of the underlined word.
Answer: Your roomate and you would normally pay the same amount as the other. So the rent would be divided evenly. Although, sometimes it can be split more than evenly if one person is willing to pay for more.
