Determine the point of view: "The teen walked along the beach with his mom, though neither one spoke to the other. The son kept glancing at his mother, sometimes with a furrowed brow, other times with wide eyes. He would start to open his mouth, but then would hastily close it again. His mother continued her steady walking, considering him out of the corner of her eye. Sometimes she smiled a thin smile, but generally she kept her mouth closed."