A. Albert Einstein
B. Charles Darwin
C. Harriet Martineau
D. Benjamin Franklin
A. Automobile
B. Radio
C. both a and b
D. None of these
A. Priceless
B. Costly
C. Ineffective
D. None of these
A. one
B. two
C. three
D. None of these
A. material invention
B. Social Invention
C. both of these
D. None of these
A. Guided by supernatural wisdom
B. Stage of disbelief
C. Stage of scientific progress
D. None of these
A. Oswald Spengler
B. Arnold Toynbee
C. Pitirim Sorokin
D. None of these
A. Variable
B. Constant
C. Problem
D. None of these
A. Social Change
B. Cultural Change
C. Language Change
D. None of these
A. Overlapg of two concepts
B. That there is no distinction between both
C. Changes of both kind
D. None of these