"Replace affects with effects" is the correct answer. This is correct because affect means to influence, whereas effects are results.
"Replace analyzed with analysed." This is incorrect because it is a z sound not an s sound.
"Replace cited with sighted." This is incorrect because cited means “to give credit to information sources”, while sighted has to do with seeing something.
"Replace scientific with sceintific." This is incorrect because this word is an example of an exception to the i before e, except after c rule. The sentence already contains the correct spelling of scientific.