Final answer:
Sebaceous glands are the glands that lubricate hair shafts by releasing sebum, which moisturizes and protects the hair and skin.the right answer is D
Step-by-step explanation:
The type of glands that lubricates the hair shafts is the sebaceous glands. These glands are associated with hair follicles and release a lipid mixture known as sebum. Sebum plays a crucial role in coating and moisturizing the hair and skin, helping to keep them pliable. Furthermore, sebum has antibacterial properties and aids in preventing water loss from the skin, especially in low-humidity environments. The production of sebum ramps up during puberty due to hormonal activity.