This Dividend King remains a rock-solid choice for generating passive income.The S&P 500 and Nasdaq Composite are both up a little over 1% in the last month. Meanwhile, the consumer staples sector is up over 4% during that time, and Coca-Cola (KO -0.76%) has been a big part of that sector gain. Coke's stock price is up 7.4% in just the last month. The move has Coke trading within a couple of percentage points of its all-time high of $64.99 a share set back on April 24, 2023.Here's why Coca-Cola has what it ...