Which two physical characteristics describe lymph?

The correct choice describes lymph accurately as colorless and watery. Lymph is a clear fluid that circulates throughout the lymphatic system, playing a vital role in immune function and fluid balance in the body. It is primarily composed of water, proteins, electrolytes, and waste products. The colorless aspect reflects its transparent nature, while its watery consistency is essential for facilitating the transport of cells and substances within the lymphatic system. This characteristic allows lymph to efficiently carry nutrients, hormones, and immune cells to and from tissues.

The other options do not represent lymph accurately; for instance, thick and yellow or green and gelatinous does not match the fluid's properties, as lymph lacks such viscosities and colors. The oily characteristic mentioned in one choice also does not apply, as lymph does not contain oil, which is more typical of subcutaneous fat.