Final answer:
The noun in the correct plural form among the listed options is 'vetoes'. The plural form is often formed by adding -es to nouns ending in -o, and the context determines the verb agreement for words that seem plural like 'politics' or 'economics'.
Step-by-step explanation:
Among the options provided, the noun written in the correct plural form is vetoes. Here is a breakdown of the plural forms for the given nouns:
- Duos is already the correct plural form of 'duo'.
- Vetoes is the correct plural form of 'veto'.
- 'Potatos' is incorrect; the correct plural form is 'potatoes'.
- 'Antennas' can be considered correct for the plural of 'antenna' in the context of devices or equipment, while 'antennae' is used in a zoological context.
When creating plural forms, certain nouns follow special rules. For instance, if a noun ends in -o, it usually takes an -es in the plural (e.g., 'veto' becomes 'vetoes'). However, there are exceptions where adding just -s is correct, as in 'duos', particularly when the word has a musical or Italian origin.
As for homophones that are often confused with contractions, it's crucial to understand the context to use the correct form. For words that seem plural such as 'economics' or 'politics', the verb agreement depends on whether the word is used in a singular or plural sense.