Identify the topic sentence: (1)Warmed up a bit, I took a walk along the main aisle. (2)I loved to look at each company's display. (3)Always showing their biggest and best produce, they showed my eyes a kaleidoscope of colors and a beautiful array of shapes and sizes. (4)Boxes were lined up, containing bright yellow lemons and oranges alternating between various shades of red and green apples. (5)A row of lettuce and other salad vegetables along the top included every shade of green imaginable. (6)Cases of smaller fruit - deep purple grapes, grass green avocados - made the large fruit look even larger. (7)The display was framed by bunches of Indiana corn hanging all around and bordered at the bottom by earthen colored squash. (8)Indeed the marketplace was a scene to awake the senses.