Question

mark a primary stress on words absent

Answer 1

I guess /ˈabs(ə)nt/  is the primary stress on  the word absent

Answer 2

Explanation:  

While speaking or pronouncing English words, syllables are not pronounced with the same stress or weight. A syllable is part of a word which consists of one vowel. A word might have one; two or three syllables.  

For example:

• in An, “A” is one syllable.  
• The tape has “ta” and “pe” - two syllables.  

The word undergoes two types of stress, one is primary stress and the other is secondary stress.  

• Primary stress is usually represented by a short vertical line above and just before the syllable being stressed (  ‘).
• Secondary stress is usually represented by a short vertical line below and before the syllable (,  ) .

Primary stress on words absent is ˈabs(ə)nt.'

This word has two syllables “ab” and “sent”