Some scientists have proposed that the earliest forms of life may have existed in an "rna world" where rna was both the genetic material and responsible for enzymatic activity. imagine that you have recreated such a life form. what would demonstrate that rna, but not protein or dna, is necessary and sufficient for these functions?

Option (A) is the correct answer.

Explanation:

In convection oven there is circulation of hot air. Hot air expands much faster as compared to cold air.

Therefore, this due to the increase in circulation of hot air the food will get cooked or baked at faster rate.

Thus, we can conclude that out of the given options, the key difference in convection oven and a regular oven is that it circulates the hot air.