UGC NET Paper 1 Exam 7 Dec 2023 Shift 2 Solved Paper
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Question : 44 of 50
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Identify the threats to the internal validity of an investigation :
(A) History
(B) Instrumentation
(C) Maturation
Choose the correct answer from the options given below:
(A) History
(B) Instrumentation
(C) Maturation
Choose the correct answer from the options given below:
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