Explain the basic irony of the missionary society’s meeting for the betterment
of conditions for “those poor mrunas.”

I'll you don't worry. don't stress out. ok now english is easy especially when it comes to literature all you have to do is focus and try new things. also open your mind and try to absorb things in instead of getting blocked in certain projects or subjects you don't understand. i suggest you honestly read my post to understand this subject better though to be honest i'm no teacher just a regular student. 

let's start.. irony. what is irony and how do you identify it? well irony in literature is just  playing around with words such that the meaning implied by a sentence or word is actually different from the literal meaning. seem easy? now how do you identify it? that's easy too. you just have to keep 3 things in mind there is verbal irony, dramatic irony and situational irony. 
watch these vids it's in utube:  
situational:  
verbal:
dramatic:
this will explain things better. now, you saw it? good. now based on all this knowledge you have earned can you identify what type of irony is in   the missionary society's meeting for the betterment of conditions for those poor mrunas?
don't worry if you still don't understand the subject you can ask me. just not now since i'm a bit busy. i honestly hope that this . 
 
this is from another person on and this girl commented this so hope this  

It sounds like they were presented with a solution that did not fit the realities of the time. as well as the state of education and the laws of the time. they are therefore presenting a rebuttal