Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
|  | Organ/Plant structure |  | Input |  | Output |
| --- | --- | --- | --- | --- | --- |
| A(n) | brain | take(s) in | sensory information from sight, smell, taste, and touch | and gives off | signals that tell the body what to do |
| The | thyroid | take(s) in | iodine; tyrosine | and gives off | triiodothyronine (T3); thyroxine (T4); calcitonin |
| The | eyes | take(s) in | light | and gives off | signals that tell the brain what the eye has seen |
| The | lungs | take(s) in | oxygen | and gives off | carbon dioxide |
| The | heart | take(s) in | blood | and gives off | blood |
| The | liver | take(s) in | blood | and gives off | blood that is cleansed of toxins |
| The | pancreas | take(s) in | hormones; signals from the nervous system | and gives off | insulin; digestive enzymes |
| The | stomach | take(s) in | nutrients | and gives off | digested food |
| The | spleen | take(s) in | blood | and gives off | blood that is cleansed of toxins |
| The | kidney | take(s) in | blood | and gives off | red blood cells; opsonins; properdin; tuftsin |
| The | muscle | take(s) in | fats; carbohydrates | and gives off | ATP |
| The | colon | take(s) in | nutrients; water | and gives off | feces |
| The | esophagus | take(s) in | nutrients | and gives off | nutrients |
| The | veins | take(s) in | blood | and gives off | blood |
| The | arteries | take(s) in | blood | and gives off | blood |
| The | nerves | take(s) in | electrochemical nerve impulses | and gives off | electrochemical nerve impulses |
| The | small intestine | take(s) in | food | and gives off | digested food |
| The | gills | take(s) in | water; oxygen | and gives off | carbon dioxide |
| The | roots | take(s) in | water; nutrients | and gives off | water; nutrients |
| The | stem; stalk | take(s) in | water; nutrients | and gives off | water; nutrients |
| The | chloroplast | take(s) in | water; carbon dioxide; sunlight | and gives off | oxygen; ATP; NADPH |
| The | stomata | take(s) in | water; carbon dioxide; oxygen | and gives off | water; carbon dioxide; oxygen |
Question:
Which organ takes in light and gives off signals that tell the brain what the eye has seen? Select the correct choice to answer the question or fill in the blank.
Choices:
(A) lungs
(B) gills
(C) heart
(D) eyes
Answer:
(D) eyes