Why does Jonas's community choose a single Receiver to hold all the memories instead of sharing them?

The Giver explains in Chapter 14 that Jonas and The Giver must hold all the memories even though:... Even the Elderly people, who make all of the community at large judgements, do not have these communitarian memories. They focus on the Person giving to give them information based on his knowledge of earlier experiences.

Explanation:

answer: may i see the sentences?

i cannot see any of the options