The correct answer is B) The accent is always on more than one syllable.
In the word "liaison" (pronounced /liˈeɪ.zɒn/ or /liˈeɪ.zɑːn/), the accent is typically on the second syllable. However, it is worth noting that there are variations in pronunciation, but the primary stress usually falls on the second syllable, indicating that it has more than one accented syllable when including the primary and secondary stress.