What did Bellini rely on to create art that spoke to people? O A. Perspective and mathematics
O B. Science and observation
O C. Color and movement
O D. Symbolism and allegory

To communicate effectively, you must understand the various factors that can affect the exchange of messages and to use communication techniques that are most appropriate for each individual situation.

Some connecting rods have to lubricate the cylinder wall or piston pin. the answer is letter d. graphite coating can be a major  additive to many  coating  systems and things such as connecting rods.  it functions as a refractory, lubricant, thermal conductor, and electrical conductor for a machine or thing to enhance its work.

Idon’t know the answer