To prevent and treat the high incidence of constipation in the elderly, all of the following practices are known to be effective except:
a) eating more legumesb) drinking more waterc) increasing physical activity
d) taking vitamin b12 injections

Ascientist introduced mutations in a gene sequence isolated from bacteria. study the sequence, and identify the steps where the mutations may affect the formation of proteins. in the sequence, black letters stand for protein coding regions and red letters stand for noncoding regions.