UGC NET Research Q80

Question

Read the following statements and choose the correct answer from the code given below:
Statements:
(a) When data are highly skewed, the rank correlation method is the most appropriate method for measuring levels of development.
(b) The rank correlation method is quite simple to use.
(c) The Z-score method is robust and is the most appropriate among all methods used to measure levels of development.
(d) If the inter-relationships between various components of development are weak and doubtful, then the use of the principal component analysis method should be avoided.
Code: