The correct option is
A False feet developed in some unicellular organisms
Pseudopods which translates to "false feet" are temporary cytoplasm-filled parts of the cell wall that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called as amoeboids. The
Amoeba is a common example. Proboscis, cilia and tongue are absent in
Amoeba.
Therefore, the correct answer is option A.