Concept:The underlined letter "o" in "gorilla" makes an unstressed, weak vowel sound known as schwa, written /ə/.
Explanation:The word "gorilla" is pronounced /ɡəˈrɪlə/, so the underlined "o" represents the schwa sound /ə/ in the first syllable.
Among the options, "colour" contains this same /ə/ sound in its weak final syllable "our", as in /ˈkʌlə/.
The other options do not match this vowel sound.
"doe" has a diphthong /əʊ/ or /oʊ/.
"ordain" begins with /ɔː/.
"tot" has /ɒ/ or /ɑː/ in different accents.
Therefore, the word that has the same vowel sound as the underlined "o" in "gorilla" is "colour".
Answer:B. colour