Indoor plants are those plants that are kept away from direct contact with sunlight, they are basically placed inside the house or in a shaded region.Example: snake plant, peace lily, spider plant, etc. Aloe vera, money plant and croton are the plant that needs not much sunlight to grow, thats why these are indoor plants.So option (2) is the correct answer.?Additional Information Outdoor plants are those type of plants which need direct contact of sunlight and placed away from house.Example: Petunia, Geranium, Tulsi, etc.Mint plants can be grown indoors as well as in outdoor nature.