Although increasing age brings sensory deficits and increasing health problems, there is little ...

Although increasing age brings sensory deficits and increasing health problems, there is little evidence to support the stereotype of cognitive decline in the later years. In fact, which statement is true?
 
  a. Depression is the central health problem for the majority of older people.
  b. Seventy-year-olds often score higher than college-age individuals on tests of vocabulary and information.
  c. Older people have a greater recall of lists of numbers than college-age people.
  d. Older people outscore college students on tests that measure cognitive abilities involved with speed of response.