Because of Complications During Delivery of Identical Twins, "Baby A

question 258

Multiple Choice

Because of complications during delivery of identical twins, "Baby A" is born vaginally while "Baby B" is born by cesarean section.As the twins have aged, Baby B alone has begun to experience rheumatoid arthritis (RA) .Which explanation most likely accounts for the autoimmune disease endured by Baby B?

• A) Baby B has led a more active lifestyle, contributing to joint degeneration.
• B) Baby B has a genetic profile that is more predisposed to RA than Baby A.
• C) Baby B has a microbiome consisting of species less well suited for human health.
• D) Baby B has eaten a less diverse diet and not acquired health-promoting bacteria in her microbiome.
• E) Baby B has been infected by a bacterium that causes RA.