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Based on the given IPA notations, I'll analyze the pronunciation of each word. 1. For the first set of words: - conscious: ˈkɑnʃəs - precious: ˈprɛʃəs - wireless: ˈwaɪrlɪs - touchscreen: No IPA notation is given for this word. Comparing the given notations, 'wireless' has a different vowel sound (aɪ) in the first syllable compared to 'conscious' and 'precious'. Since 'touchscreen' doesn't have an IPA notation, I'll consider the other three options and choose 'wireless' as the word that differs from the others in pronunciation. However, without the IPA for 'touchscreen', we can't definitively conclude that 'wireless' is the correct answer based solely on the given information. 2. For the second set of words: - assist: əˈsɪst - virtual: ˈvərʧuəl - hilarious: hɪˈlɛriəs - spacious: ˈspeɪʃəs Comparing the given notations, 'assist' has a different stress pattern (əˈsɪst) with the main stress on the second syllable, whereas the other words have their main stress on the first syllable. Based on this, 'assist' differs from the others in pronunciation.