In "depression the secret we share", which of the following identifies andrew solomon’s main claim in the speech?

a
depression is often not openly discussed because it is an uncommon mental illness, and usually too mild to recognize or treat.
b
people do not openly talk about their depression or seek treatment because it has often been viewed as embarrassing.
c
it is difficult to seek treatment for depression, as it is viewed a glorified form of sadness rather than a serious mental illness.
d
depression is overwhelmingly experienced by wealthy people who feel dissatisfied despite having good lives.