Option A is the correct answer because the correct way to spell it is “PRONOUNCE” and not pronounse, hence it is the correct answer.
To pronounce means to say in a particular way or manner.
Option B is incorrect because ‘enhance ‘ is spelled correctly, it means to increase the effect of.
Option C is incorrect because ‘performing’ is spelled correctly, it means the act of doing a performance.
Option D is incorrect because ‘exclusion’ is spelled correctly, it means the act of excluding something.