Since the images are not available, I can only give the hints to correctly classify the items as a fruit and a vegetable.
a. If it is a fruit, then it will have seeds inside it. Example, the seeds in a citrus lime or a lemon, a watermelon.
b. If it is a vegetable, then it will be any edible part of the plant, like the leaves, stem, roots, or the flower, but not the fruit. Examples are spinach, potato, cauliflower, cabbage, etc.
Cheese, yogurt, buttermilk, sour cream, and pickles are lactic acid fermenters. Yogurt and cheese both start with a source of sugar (i.e., lactose from milk).
Hope this helped
This process is called melting. When a solid melts, it turns into a liquid.