Glucocorticoids do not cause vasoconstriction, but they can enhance the vasoconstrictive effect of noradrenaline. This is known as

Aantagonistic action
Bsynergistic action
Cpermissive action
Dpositive feedback action

Correct answer: C. permissive action

Permissive action refers to the enhancement of a hormone's effect by another hormone, which fits the description given in the question.

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