Can one person make a difference in this world ​

However, it's actually impossible not to make a difference. The movements started by people such as Nelson Mandela, Malala Yousafzai, Greta Thunberg, etc. are widely known. But it's not just well-known people who make a difference – and it's not just the stories that make the headlines that count.

answer is d. graphite coatings.

some connecting rods have _graphite coatings_ to lubricate the cylinder wall or piston pin.