When Mr. Bergman's wife died, his family members and friends dressed in black, attended a funeral, and participated in a burial service. Mr. Bergman covered all the mirrors in his house with black cloths. This set of culturally specified expressions of thoughts and feelings is .

Mourning

Explanation:

Mourning is a term that describes an expression of sadness or a period of grieving that comes after the death of someone one cared for, or other crucial loss.

In other words, Mourning is a process which involves individuals taking the grief on the inside or internally and express it outside or externally.

Hence, in this case, this set of culturally specified expressions of thoughts and feelings is MOURNING.

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