Correct Answer: The blind man asked me if I could help him cross the road.

Solution : The first option is the correct choice.

The steps of conversion are as follows:

• The reporting verb "said" is changed to "asked" to emphasise the interrogative nature of the sentence.
• The connector "if" is used to introduce the reported clause in the case of yes or no questions.
• The second-person pronoun "you" is changed to the first-person pronoun "I".
• The modal "can" is changed to its past form, "could".

Therefore, the correct answer is: "The blind man asked me if I could help him cross the road."