To solve this problem, we need to identify the correct term that describes the condition of tomato seedlings turning white in a dark room. Let's analyze the options:$\newline \bullet$Option 1: Mutated - Mutation refers to a change in the genetic material of an organism. The change in color due to lack of light is not a result of mutation.$\newline \bullet$Option 2: Embolized - Embolism is a term used in medicine to describe a blockage in a blood vessel. It is not related to plant physiology or the change in color of seedlings.$\newline \bullet$Option 3: Etiolated - Etiolation is a process in plants grown in partial or complete absence of light, characterized by long, weak stems, smaller leaves, and a pale yellow color due to lack of chlorophyll. This matches the condition described in the question.$\newline \bullet$Option 4: Defoliated - Defoliation refers to the loss of leaves from a plant, which is not related to the color change described.$\newline$Based on the analysis, the correct term to describe the white-colored seedlings is Etiolated.$\newline$Therefore, the correct option is Option 3.