Read each sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The corresponding letter of that part is the answer. If the given sentence is correct as it is, then choose option ‘No error’ as your answer response. (Ignore errors of punctuation, if any).

The responsibilities of these (A)/ complex negotiations are currently (B)/ being bear by a team of (C)/ experienced diplomats and legal experts. (D)

Correct option is C

Part C contains an error. The verb phrase "being bear" is incorrect. The correct form should be "being borne," which is the past participle of "bear" used in passive constructions.
The correct sentence should be: "The responsibilities of these complex negotiations are currently being borne by a team of experienced diplomats and legal experts."
Rule: In passive constructions, use the correct past participle form of the verb. Here, "borne" is the correct past participle of "bear" in the passive voice.