Given below are sentences that use discourse markers/expressions to make them complete. Identify the most appropriate discourse marker and mark your answer accordingly on the Answer Sheet. __________, you needed to consult a physician to have a clear idea of what the disease is about.

Step-by-step solution

The sentence requires a discourse marker that indicates a consequence or a suggested action based on a specific situation. The phrase 'In that case' perfectly fits the context, meaning 'if that is/was the situation'. 'In these case' is grammatically incorrect as 'these' is plural and 'case' is singular. 'Likewise' means similarly, which does not fit the logical flow of the sentence. 'Henceforth' means from this time forward, which contradicts the past tense verb 'needed' used in the sentence. Thus, 'In that case' i