A. internal validity
B. face validty
C. reliability
D. external validity
A. 15.8%
B. 11.8%
C. 10.8%
D. 15.4%
A. Indai
B. Bhutan
C. South Africa
D. China
A. Dollar
B. Dirham
C. Peso
D. Pound
A. Diamonds
B. Silver
C. Perfumes
D. Cereals
A. Iron ore
B. Coal
C. Mica
D. Copper
A. USA
B. Russia
C. Mexico
D. South Africa
A. Iron, gold and silver
B. Gold, silver and lead
C. Iron, lead and sulphur
D. All of the above minerals
A. Rubber
B. Jute
C. Rice
D. None of these
A. Indonesia
B. India
C. Brazil
D. None of these