The question requires finding the word that is nearest in meaning to the underlined word 'ambiguous' in the provided sentence.
The sentence is: "Often, the context and structure of an ambiguous statement is difficult to discern."
In this context, 'ambiguous' refers to a statement that is unclear, uncertain, or open to multiple interpretations, making it hard to understand or 'discern'.
We need to evaluate the given options to find the best synonym for 'ambiguous':
Based on the analysis, 'cryptic' is the most suitable synonym for 'ambiguous' because both imply a lack of clarity and a degree of mystery or difficulty in understanding.
Thus, the nearest meaning to ambiguous is cryptic.