Final answer:
Ambiguous sentences can indeed have multiple syntactic trees, lead to multiple interpretations by the same word sequence, and result in diverse understandings due to parsing into different phrases, confirming that all statements A, B, and C are true (Option D).
Step-by-step explanation:
When considering ambiguous sentences, several characteristics stand out. Firstly, these sentences may indeed have multiple possible syntactic trees. A syntactic tree is a diagram used to illustrate the structure of a sentence, and ambiguity means there could be more than one way to structure the same set of words. Secondly, it's true that ambiguous sentences can lead to multiple interpretations by the very same sequence of words due to their vague nature, which can convey more than one meaning.
Lastly, the reason behind these multiple interpretations can be attributed to how the sentences can be parsed into different noun phrases, verb phrases, and prepositional phrases, leading to variation in understanding the intended message.
In essence, ambiguous sentences are those that can be understood in more than one way due to their structure and word arrangement. This multiplicity can arise during the parsing process, whereby the sentence components like nouns, verbs, and prepositions are organized in different ways to produce varied meanings.