Answer:
C). Although the side effects of antidepressant drugs range from dizziness to sexual dysfunction, these drugs can save lives.
Step-by-step explanation:
The sentence that most appropriately shows the relationship between two ideas is 'Although the side effects of antidepressant drugs range from dizziness to sexual dysfunction, these drugs can save lives.' The word 'although' is appropriately displaying the contrast between the two ideas as the first idea talks about the 'side effects associated with antidepressant drugs' while the latter asserts that 'it can save lives.' Thus, the contrary relationship is displayed appropriately. Thus, option C is the correct answer.