Final answer:
The stress in the pronunciation of "audiometer" falls on the second syllable, 'Di'. Learning which syllable to stress is crucial for proper pronunciation in English.
Step-by-step explanation:
The correct syllable that receives emphasis when pronouncing the word "audiometer" is option B) Di. The word "audiometer" is generally pronounced with the stress on the second syllable, so it sounds like aw-dee-OM-uh-ter.
Understanding how to determine the stressed syllable is important for proper pronunciation, especially in words with more complex structures such as those with prefixes, bases, and suffixes, where the stress can shift depending on word formation.