Concept:The word "overwhelming" carries its main stress on the third syllable.Explanation:Split the word into syllables as o-ver-whelm-ing.The phonetic transcription /ˌəʊvəˈwelmɪŋ/ shows that the stress falls on "whelm".Thus the correct stress pattern is o-ver-WHELM-ing.Answer:C. o-ver-WHELM-ing