Answer:
d. A gene from an organism can theoretically be expressed by any other organism.
Explanation:
If we talk about genetic code, it comprises the rules through which genetic material of an organism like RNA or DNA is changed into a functional protein through the process of translation.
Every gene is composed of sequence of nucleotide in set of three called codon. Each codon codes for one amino acid for example CCT codes for Proline.
So, coming to the the question that based on the uniformity of genetic code we can conclude that is a genetic codon codes for one amino acid in one organism like human, without any doubt the same genetic codon will code for same amino acid in any other organism like monkey. why? Again because codon is universal.
So based on these facts the best option that can be concluded is A gene from an organism can theoretically be expressed by any other organism.
Hope it helps!