Select the most appropriate option to fill in the blank.
"His friends disagreed _________ him on that point."

Explanation of the Correct Answer:
· The verb "disagree" takes the preposition "with" when referring to a person.
· The correct phrase is "disagree with someone."
· The sentence should be:
· "His friends disagreed with him on that point."
Other options:
· (a) "for" → Incorrect. "Disagree for" is not a valid phrase in standard English.
· (b) "on" → Partially correct but incomplete. "Disagree on" is used for topics, not people. Example: "They disagreed on politics."
· (c) "to" → Incorrect. "Disagree to" is never used in English.
Thus, the correct answer is (d) "with."