IMHO its C.
Here's why:
A) RNA was fabricated out of simple prebiotic substances.
We don't know whether the prebiotic substances were simple.
All we know from the passage is that
RNA was fabricated out of prebiotic substances in the experiment.
B) More than one dozen significant amino acids were synthesized.
It's true that 13 amino acids were synthesized in all. (A few during the experiment, and few after further experimenting. But 13 in all). However, what we don't know is whether these 13 were the significant ones among the 20 necessary for life.
C) The experiment took several weeks to complete.
Bingo. mentioned clearly in the passage.
D) Cytosine and uracil formed in the sealed beaker.
No mention of this.
E) The experiment was conducted in a flask filled with protein enzymes.
In fact the experiment was conducted to show the formation of these enzymes and amino acids.[/quote]
Here's why:
A) RNA was fabricated out of simple prebiotic substances.
We don't know whether the prebiotic substances were simple.
All we know from the passage is that
RNA was fabricated out of prebiotic substances in the experiment.
B) More than one dozen significant amino acids were synthesized.
It's true that 13 amino acids were synthesized in all. (A few during the experiment, and few after further experimenting. But 13 in all). However, what we don't know is whether these 13 were the significant ones among the 20 necessary for life.
C) The experiment took several weeks to complete.
Bingo. mentioned clearly in the passage.
D) Cytosine and uracil formed in the sealed beaker.
No mention of this.
E) The experiment was conducted in a flask filled with protein enzymes.
In fact the experiment was conducted to show the formation of these enzymes and amino acids.[/quote]
