<span>Their model of the DNA molecule showed that the hydrogen bonds could create a nearly perfect fit between nitrogenous bases along the center of the molecule. But the bonds could only form between adenine and thymine, and between cytosine and guanine.</span>
They were the first ones to build a model that showed the hydrogen bonds that could make a almost perfect fit between nitrogenous bases along the center of the molecule. This could only happen if the bonds could form between adenine and thymine, and between cytosine and guanine.
I think that the answer would probably be C, because often if it is like a teen or something they will not use grammatical correct sentences, the character does not always need to speak in short sentences, and the if the character is mad they probably will not speak politely. But I am not 100% sorry
