Older adults remember when compared to that of younger adults.

Older adults remember less when compared to that of younger adults.

Explanation:

As adults age their ability to store information, that is, memory begins to undergo a slow and gradual process of deterioration, or if, in the modern world, the absurd amount of information we are bombarded with hinders its assimilation. For this reason, older adults remember less than younger adults.  In any case, memory loss cannot be considered as an inexorable fact associated with aging.

i think it would be   c)   the raw   materials necesarry to produce   goods

i think im right about 70%