As memories get older, they are most likely to get lost to become stronger, more accurate, and more vivid to be regarded as unreliable by the person using them to become changed or altered in some fashion

The answer to this question is the last item from the choices which is "As memories get older, they are most likely changed or altered in some fashion".  As people grow and as age become bigger, we tend to forget some of the stored memories and others behavior might change due to the latest trends that come on their way. Some memories also were altered due to their present encounters.

1. regressive 2. the same tax as 3. tony 4. tony