The sequential operations in scientific research are (A) Co-variation, Elimination of Spurious Relations, Generalisation, Theorisation (B) Generalisation, Co-variation, Theorisation, Elimination of Spurious Relations (C) Theorisation, Generalisation, Elimination of Spurious Relations, Covariation (D) Elimination of Spurious Relations, Theorisation, Generalisation, Covariation.

The sequential operations in scientific research are (A) Co-variation, Elimination of Spurious Relations, Generalisation, Theorisation (B) Generalisation, Co-variation, Theorisation, Elimination of Spurious Relations (C) Theorisation, Generalisation, Elimination of Spurious Relations, Covariation (D) Elimination of Spurious Relations, Theorisation, Generalisation, Covariation.
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(A) Co-variation, Elimination of Spurious Relations, Generalisation, Theorisation 
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