Answer:
The correct answer is - option A.
Explanation:
Protists are single-celled eukaryotic organisms and usually move by cilia, flagella. Generally, they lack cell walls however, some forms may have a cell wall. They have organelles including a nucleus and may have chloroplasts, so some will be green and others won't be. They also contain the mitochondria for energy purposes.
Thus, laura should place the organism she found in the Protista biological kingdom according to their characteristics.
