It is a typical wednesday for thomas. he gets dressed for work in the morning, grabs his briefcase and drives to work. today, thomas decides to come home early to take his dog for a walk. as soon as he unlocks his apartment, he throws his briefcase by the door and changes into jogging shorts. he then grabs his dog and goes for a long walk. he returns, and decides to do some laundry before he gets ready to leave for his basketball game. when thomas is about to leave, he realizes he can’t find his keys. how could thomas use the steps of the scientific method to locate his missing keys?

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.