Is known for his use of nonsense syllables in his experiments on forgetting.
a. sigmund freud
b. jean piaget
c. herman ebbinghaus
d. harry bahrick

The correct answer is letter C.

Herman Ebbinghaus was a German psychologist who was one of the first to study memory. In his research, he would use associations that were called "nonsense syllables". which is a consonant-vowel-consonant combination in which the consonant is not repeated and the syllable doesn't have prior meaning.

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".