The function of the gap junction is to: Stop substance from leaking across a tissue; Performing cementing to keep neighbouring cells together; Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules; Separate two cells from each other

The inter-cellular connection between two animal cells directly through the cytoplasm of two cells is called as gap junction. It allows the direct transfer of ions and some small molecules from one cell to another cell or the communication between adjoining cells. It is not found in simpler organisms such as sponges and slime molds.Thus, the correct answer is option C.