Final answer:
The correct sequence for signaling pathways close to target cells is Paracrine → Synaptic → Endocrine, with paracrine affecting nearby cells, synaptic involving nerve cells, and endocrine traveling long distances through the bloodstream.
Step-by-step explanation:
The correct order of signaling pathways in terms of proximity to the target cells is Paracrine → Synaptic → Endocrine. Paracrine signaling acts on nearby cells and involves ligands moving by diffusion through the extracellular matrix. Synaptic signaling or synaptic signal is a form of chemical communication that occurs between nerve cells, which are often in close proximity. Finally, endocrine signaling involves signals from distant cells called endocrine signals. These signals travel long distances through the bloodstream to reach target cells and are typically hormones.