Final Answer:
Ram said that I was late that day.
He said that he would write a letter the next day.
He told me that he could easily beat me in the match.
The mother warned her little girl not to play with fire.
All options are correct.
Step-by-step explanation:
In reported or indirect speech, the original speaker's words are transformed to fit grammatically and contextually. In the given sentences:
"Ram said, 'You are late today'" becomes "Ram said that I was late that day."
"He said, 'I will write a letter tomorrow'" transforms to "He said that he would write a letter the next day."
"He said to me, 'I can easily beat you in the match'" becomes "He told me that he could easily beat me in the match."
"The mother said to her little girl, 'I have told you not to play with fire'" changes to "The mother warned her little girl not to play with fire."