Final answer:
b) u. The primary accent in the word 'ovulation' is on the second syllable, 'u'.
Step-by-step explanation:
In the word 'ovulation', the primary accent falls on the second syllable, 'u'.
When determining the primary accent of a word, it is important to understand that syllables can have different levels of stress. In this case, the 'u' in 'ovulation' is stressed more than the other syllables.
It is also helpful to note that the primary accent in a word is indicated by a vertical line ( ˈ ) placed before the stressed syllable. So, the correct answer is (b) u.