In the story rikki tikki tavi how is rikki the protagonist?

Rikki Tikki Tavi is the protagonist as he is the main character and hero of his story. He is the one that drives the action (ie, gets in 'trouble' and kills the snakes). The cobra's would be antagonist and the family would be supporting characters, but not the protagonist.

He saves teddy's family and the garden by killing both Nag, Nagaina, and kurate

given the fact that the question is about the detail that best support the idea that oppressive leaders use   propaganda to achieve thir goals,   the first option does not refer to any kind of propaganda, since it only tells about that the milk and the windfall apple should be reserved for the pigs. in the second option, that is, "snowball and napoleon sent out flights of pigeons whose instructions were to mingle with the animals on the neighbouring farms, tell them the story of the rebellion, and teach them the tune of "beasts of england". it can be identified that the oppressors make use of the propaganda, which is represented by the pigeons, and the information they have to tell other animals about what was happening in the farm in order to get their objectives. for that reason, the right answer is the second option, taking into account that the third option do not refer to propaganda since it only talks about that they did not want jones back. and, finally, the last option refers to the result of the given news, but it does not mean about the propaganda they used to achieve their goals.