Choose the correct one-word substitute. One who is appointed to investigate complaints against public authorities.AArbitratorBOmbudsmanCMediatorDAdjudicatorAnswer: B. Ombudsman Read Explanation: Arbitrator – A person appointed to settle a dispute between two parties through arbitration. (മധ്യസ്ഥ വിധികർത്താവ്)Ombudsman – An official who investigates complaints against public authorities. (പരാതി അന്വേഷിക്കുന്ന സ്വതന്ത്ര ഉദ്യോഗസ്ഥൻ)Mediator – A person who helps two disputing parties reach an agreement. (മധ്യസ്ഥൻ)Adjudicator – A person who makes an official decision in a dispute. (തർക്കത്തിൽ ഔദ്യോഗിക തീരുമാനം എടുക്കുന്നയാൾ) Read more in App