Answer:
The correct answer is option b. "Malnutrition has no significant effect on the genomic base pair content of a person's muscles".
Explanation:
Chargaff's Rules state that the content of nucleotides in the cells have a 1:1 ratio of pyrimidine and purine bases and the composition of DNA varies from one species to another but not within the same specie. Therefore according to Chargaff's Rules malnutrition has no significant effect on the genomic base pair content of a person's muscles, since no variation of the genomic base pair content should occur within the same person or specie.
Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains.
It should be natural selection since there is no external influence implied. (like environment or genetic mutations.)