Cells can interact with other cells a. during specific stages of the cell cycle. b. that originated from the same stem cells. c. nearby or throughout the body, depending on the type of cell-cell interaction. d. that are nearby or within the same tissue.

C

Explanation:

A cell can communicate with nearby cells (paracrine signaling) and with cells far away from them (endocrine signaling). These signalings are dependent on the cell membrane receptors on the cell and their response to ligands that bind to them. An example of close cell communication is that of neurotransmitters in neural synapses. An example of cells communicating with faraway cells is that of the pancreas that produces insulin into the blood. The insulin induces other cells  across the body to take up glucose.

google my dude. if it doesn't show up ask me.

that scientist would be robert hooke