Gerta's health is declining. her son don asks her to move in with him, but gerta refuses. theory explain gerta's desire to live where many of her memorable life events took place.

The answer is continuity theory. This expresses older adults for the most part keep up similar exercises, practices, connections as they did in their before years of life. As per this hypothesis, more seasoned grown-ups attempt to keep up this coherence of way of life by adjusting procedures that are associated with their past encounters. The congruity hypothesis is one of three noteworthy psychosocial speculations which portray how individuals create in their old age.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.