Final answer:
Broccoli is the best source of vitamin K among the given options, which include egg yolks, sweet potatoes, and almonds. Green leafy vegetables are generally the richest sources of vitamin K.
Step-by-step explanation:
A good source of vitamin K among the options given is broccoli. Vitamin K is essential for several bodily functions, including blood clotting and bone health. The best dietary sources of vitamin K are green leafy vegetables such as spinach, cabbage, and kale.
Broccoli is especially rich in this vitamin. Other notable sources include certain animal products and fermented foods, where vitamin K2 is available. While egg yolks, sweet potatoes, and almonds do provide some vitamin K, they are not as rich a source as green leafy vegetables. For instance, egg yolks contain a small amount, whereas almonds have other nutrients and provide some vitamin K through their oil content.