Greta's psychiatrist advises her to buy bright lights, which are to be turned on in the early morning hours of winter days to reduce her problem with depression. we can guess that greta's problem is a. dysthymia due to a medical condition b. major depressive disorders with a seasonal pattern c. postpartum onset d. rapid-cycling bipolar disorder

The correct choice from the given options is "b. major depressive disorders with a seasonal pattern".

Seasonal affective disorder (SAD) refers to a state of mind issue subset in which individuals who have typical psychological well-being all through a large portion of the year display depressive side effects in the meantime every year, most ordinarily in the winter. People may rest excessively or have little energy. The condition in the mid year or summer can incorporate increased uneasiness.

Afine-grained igneous rock forms as a result of slow cooling.