Eye Test: Read the Words in the Red Fields

When you think of a puzzle, the first thought that comes to mind is a puzzle that is mathematical, logical, or visual. Well, this puzzle is just like the third ones – visual. This is an interesting puzzle, which has one simple rule and that is that all you have to do is read the words that are hidden in the red fields.
As an introduction to the puzzle, we can tell you that our eyes see a variety of colors. However, not all of us can see a certain type of color or shade perfectly well. This is about the ability to distinguish even the smallest difference in the shadow. This puzzle consists of several words that are hidden behind the color red. The words inscribed in the red fields are slightly different from the background. You need to look closely at each of them and try to read the word behind each one.

Picture # 1

Options:

CAST
CATS
BATS
EATS