Concept:The underlined letters "th" in "method" stand for the voiceless consonant sound /θ/.Explanation:The word "method" is pronounced with "th" as in "bath".Now check each option:A. "brother" – "th" sounds like voiced /δ/, so it is different.B. "bath" – "th" sounds like voiceless /θ/, same as in "method".C. "though" – "th" sounds like voiced /δ/, so it is different.D. "breathe" – "th" sounds like voiced /δ/, so it is different.Therefore, the word with the same consonant sound is "bath".Answer:B. bath