The answer is: 1) Blood capillaries and lacteal

The description given in the question is that of villi, which are small finger-like projections found in the lining of the small intestine. Villi play an important role in nutrient absorption from the digested food. The surface of the villi is covered with numerous microscopic projections called microvilli, which further increase the surface area for absorption.

Blood capillaries and lacteal are the two types of vessels that are present in the villi. Blood capillaries are small blood vessels that are responsible for the absorption of nutrients such as glucose and amino acids, which are transported to the liver and other tissues through the bloodstream. Lacteals are specialized lymphatic vessels that are responsible for the absorption of dietary fats and fat-soluble vitamins. The absorbed fats are transported by the lymphatic system and eventually enter the bloodstream.

The network of blood capillaries and lacteals in the villi is an example of the close relationship between the circulatory and digestive systems. The nutrients and other substances that are absorbed by the villi are transported to the rest of the body through the bloodstream. The lymphatic system also plays an important role in maintaining fluid balance and immunity.

Therefore, the correct answer is that the small finger-like projection in the small intestine, which produce numerous microscopic projections, are supplied with a network of blood capillaries and lacteal.