C
Its c because it makes more sence
Because it's gonna help you to the future
1) dia would have the missing accent
2) "yamo" is llamo because "ll" makes a "y" sound
3) not sure
4) my teacher says that in spanish you don't need to capitalize the beginning of a sentence, so probably "yo" , "como" and "eres"
I don't think there's a way to say Kenneth in Spanish. But I would use ken just because it's easier to pronounce.