Final answer:
In the given sentence, the correct synonym for 'miracle' is 'blessing,' as it refers to an extraordinary and positive event, which may be seen as the result of divine intervention.
Step-by-step explanation:
The correct synonym for 'miracle' in the given sentence 'We suffered only one casualty' is option 3) blessing. The term 'miracle' often refers to an extraordinary event, generally one with positive connotations, unlike a tragedy, disaster, or accident, all of which have more negative implications. A miracle in a more religious or spiritual sense is an event believed to be caused by divine intervention that violates the laws of nature.
For instance, surviving a major accident with minimal injury could be perceived by some as a miracle due to the unlikelihood of such an outcome, thereby considering it a blessing. However, to be deemed a miracle in a strict sense, an event must be inexplicable by natural or scientific laws and must clearly indicate the intervention of a higher power, such as a deity or God.