Why is it advisable to change the lubricating oil periodically?

Why is it advisable to change the lubricating oil periodically?
A)Because over time the oil becomes more viscous and does not flow properly between the parts.
B)Because with use and after some time the oil loses an excessive amount of volume and must be topped up.
C)Because, being in good condition, it keeps the engine in good condition for longer and the wear of the parts is reduced.Correct
# Periodic change of lubricating oil Oil in good condition effectively performs its lubricating function, reducing friction between engine parts and preventing premature wear. By changing the oil regularly, you extend the engine's lifespan and maintain its optimal performance for longer.