Those who show improvement following the death of a loved one usually have gained _______.​

A) ​resiliency
B) ​acute-recovery
C) ​improvement
D) ​denial

Resiliency refers to the ability to recover from adversity, and those who show improvement after the loss of a loved one have likely developed this trait. Acute-recovery is not a commonly used term in this context, improvement is too vague, and denial suggests avoidance rather than positive change.