MARROW : BONE : : SAP : TREE What kind of analogy is this?

a Item to Category

b User to Tool

c Part to Whole

d Synonym

Which of the following statements is true about social anxiety disorder? social anxiety disorder tends to develop in early adulthood. social anxiety disorder often co-occurs with mood disorders and other anxiety disorders. social anxiety disorder is relatively rare, with a lifetime prevalence of about three percent in the united states. lesser than 30 percent of adults with social anxiety disorder report humiliating experiences that contributed to their symptoms.