PIN POINTING ERROR (1)

(2)  His story about the strange beings in a space ship was so incredulous that none believe it.

Explanation....incredulous..অর্থ  অবিস্সাসপ্রবন, এই শব্দটা মানুষের জন্য  ,  story জন্য নয়। 
কিন্তু এখানে বলা হয়েছে     His story.........was incredulous.                              এটাকে  বলে  
ERROR OF DICTION
SO  Answer is  incredulous

(3)The hot air balloon had burst as they  were preparing for lunch , and the platform had broke as aresult no error.

explanation.....Co-ortinating Conguction as.. and, but, or, not only, but also,either,neither,both..and, rather...than, as well as    এগুলির  আগে যা  বসে পরেও   তাই  বসে।AND   এর  আগে  Past perfect tense থাকতে   পরেও  Past perfect tense হবে তাই  Hadএর পরে  broken  হবে  ।