Fill in the blank with a suitable option:
"Don't eat those cherries, they are poisonous," said David.
David _______________ not to eat those cherries because they were poisonous.
The two ways of relating what a person has said are 1)direct and 2)indirect (reported speech).In direct speech, the original speaker's exact words are repeated. In indirect/reported speech, the exact meaning is expressed but not necessarily using the original speaker's exact words. Pronouns and possessive adjectives usually change from first or second person to the third person except when the speaker is reporting his own words. Sometimes a noun can be inserted to avoid doubt.
When we turn direct questions and exclamations into indirect speech, they are converted to affirmative statement .( ? and ! is not used).
Option C is correct as the given sentence is a command (indicated by don't) and it suggests of a warning, so the introductory verb warned is used.
The other options are wrong as didn't, said, and suggested that can't be used.
The correct answer is C)Warned me