Which observation provides evidence that a cell is most likely a eukaryote?

a. ribosomes assemble proteins inside the cell
b. it has a golgi apparatus for vesicle production
c. the organelles are enclosed in membranes
d. it contains a vacuole that stores water

The correct answer is -

C. The organelles are enclosed in membranes.

Eukaryotes are those living organisms that conatin a true nucleus (containing the genetic material) and membrane bound cell organelles (also known as subcellular compartments) such as mitochondria, lysosomes, golgi complex, endoplasmic reticulum.

Example - Plant and animal cells are eukaryotic cells.

Thus, out of the given options, C) option provides evidence for the cell to most likely be a eukaryote.