During respiration oxygen enters the blood and carbon dioxide leaves the blood
The answer is photosynthesis
B. The first generation of pea plants were mostly tall.
It draws a conclusion based on what would best explain one's observations.
Inference is the process where logical consequences evolve from premises that are assumed to be true. Knowledge backed with observations and reasoning as evidence is used to make conclusions. It is also referred to as an educated guess and is not necessarily factual.