Question: unsure about which type of 038 file you have? do you want to know exactly what it is, who created it, and how to open it?
Answer: --> Unsure about which type of 038 file you have? Do you want to know exactly what it is, who created it, and how to open it?

Question: let us use our intelligence and learn these meanings...
Answer: --> Let us use our intelligence and learn these meanings...

Question: atherosclerosis is a gradual process whereby hard cholesterol substances (plaques) are deposited in the walls of the arteries.
Answer:
--> Atherosclerosis is a gradual process whereby hard cholesterol substances (plaques) are deposited in the walls of the arteries.