To contrast the characters choices in a smart cookie and an hour with Abuelo the most important thing to analyze is A. What Esperanza and Arturo say
B. What Esperanza and Arturo’s abuelo say
C. What Esperanza’s mother and Arturo say
D. What Esperanza’s mother and Arturo’s abuela say

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.