Select the most appropriate option to improve the bold part of the sentence.
He is one of those players who has scored the most goals.

Correct option is A

The correct substitution of the highlighted words is (a) have scored.
#Explanation: In the structure “one of those + plural noun + who/that + verb,” the relative pronoun “who” refers back to the plural antecedent “players,” so the verb must be plural ( have scored), not singular ( has scored). The sentence means: among those players who have scored the most goals, he is one. Using a singular verb wrongly makes “who” refer to “one” instead of “players.”
Grammatical rule used: With “one of + plural noun + who/that”, the relative clause modifies the plural noun; therefore use a plural verb after who/that (e.g., one of the students who have qualified).
Example: She is one of the writers who have won multiple awards.
Info booster / exceptions: When the writer explicitly intends “who” to refer to “one” (especially with only/sole), a singular verb is possible: He is the only one of the players who has scored today. Here only one restricts the reference to one, not the plural set.