Concept:The main stress of "leguminous" is on its second syllable.
Explanation:The correct pronunciation is /ləˈɡjuː.mɪ.nəs/.
The strongest stress falls on the syllable "GUM", which is the second syllable.
In the options, capital letters show the stressed syllable.
Option B, le-GUM-in-ous, places the capital letters only on the second syllable.
Options A, C, and D stress the first, third, and fourth syllables respectively, which are incorrect.
Answer:B. le-GUM-in-ous