Select the phrase(s) from the given three options which

Solution

The sentences are contradictory - A tells us that the vast array of blood tests available to the clinician aid diagnosis, and B contradicts it by telling us how the choice of the test and its interpretation needs to be considered in light of the patient and their symptoms. 1 is correct as BUT is used to show contradiction - “The huge array of blood tests available to the clinician’s aid in a rapid diagnosis in many instances, but the choice and the interpretation of the test needs to be considered in light of the patient and their presenting symptoms.”