Final answer:
The correct participle to complete the statement is 'dicho'.
Step-by-step explanation:
The correct participle to complete the statement is dicho.
For example, in the sentence 'No he dicho nada', the participle 'dicho' is used in the compound verb construction 'he dicho', meaning 'I have said'.
The other options, 'Odigo' and 'decir', are not correct participles in this context.
Learn more about Participles in Spanish