Living amoeba is

The correct option is Translucent.

An Amoeba is a unicellular, microscopic organism found in freshwater habitats. In its living, active state, its cytoplasm consists of two main zones: a clear, gel-like outer layer called the ectoplasm and a granular, fluid inner layer called the endoplasm.

Because these cellular contents do not have pigments to absorb or reflect light in a distinct color (like light green or pale blue), and yet contain organelles, granules, and vacuoles that scatter light slightly, a living amoeba does not allow light to pass through completely unobstructed (which would make it fully transparent). Instead, it allows light to pass through partially, making its appearance semi-clear or translucent under a light microscope.