Option 1 -> The passage explicitly states the English plantation manager was "goaded by the need for communication" and "had arranged for the setting up of a post office."
Option 2 -> The text makes no mention of government involvement; it credits the manager with establishing the post office.
Option 3 -> The passage indicates the plantation workers "had their own community" and social mixing was "all but impossible," suggesting the community didn't drive this decision.
Option 4 -> The passage states the manager "had arranged for the setting up of" the post office, indicating it was newly established, not pre-existing.
Hence, Option 1: Because of the English plantation manager's personal need -> The passage clearly attributes the post office's existence to the Englishman manager who, driven by his own communication needs, arranged for its establishment in this remote village -> correct