Rachel just gave birth to her first child

Unfortunately, the baby was born with significant heart, lung, and kidney damage and is in the neonatal intensive care unit. Though the baby is only surviving because of all of the life support machines he is hooked up to, Rachel refuses to acknowledge the severity of the situation and instead talks about what outfits the baby can wear and whether he'll like his nursery at home. Which of the following defense mechanisms may best explain Rachel's refusal to acknowledge how ill her newborn son really is?
a) repression
b) denial
c) projection
d) displacement

Answer: b