Fill in the blank(s) with appropriate word/ words.
Confused and ........ Shyam fumbled to make sense of seemingly inconsistent statements, ............ the impatience of his listeners.

Out of the given options, "incoherent" is the best choice for the first blank. The word "incoherent" means lacking clarity or logical connection, often used to describe speech or thought that is jumbled or unclear. In this context, Shyam is struggling to make sense of inconsistent statements, so "incoherent" fits perfectly to describe his confused state of mind or speech. 

The phrase "oblivious to" means unaware of or not noticing something. Here, Shyam is so caught up in his confusion that he doesn’t notice the impatience of his listeners, making "oblivious to" the best fit.

Making Option C the correct answer.