Summarization
Directions: The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Spell out the missing letters of the word.

The vitality of our societies will increasingly depend on active participation by older persons. It is therefore imperative that we foster economic and social conditions that will allow people of all ages to remain integrated into society. An essential challenge is to promote a culture that values the experience and knowledge that come with age. 

A favorable e to ensure older people's partici pation in society.