Which sentence has an error in a plural noun?
the smithsonian exhibit displays the inauguration gowns of many first ladies.
many coastal cities were affected by the hurricane.
good chefs bring their own knifes.

Third Option: Good chefs bring their own knifes.

It should be "Good chefs bring their own knives.

Explanation:

Knife is a noun which is made plural by replacing "fe" with "-ves" i.e "knives" from "knife"

Many nouns end with "f" sound are made plural by adding "-ves" at their end. But there are many other nouns ending with "f" sound but made plural by simply adding "-s" at the end.

There is no hard and fast rule for identifying whether to add "-ves" or simple "-s" and even if some rule is made, there appear many exceptions to such rules. So it is better to learn them by practice.

1: Words ending with -ff are made plural by simply adding -s, e.g;

cliff - cliffs

toff - toffs

scuff - scuffs

sniff - sniffs

2: Some words ending in f are made plural by adding -s in the end, e.g

roof - roofs

chef - chefs

chief - chiefs

oaf -oafs

3: Words which end in f or fe and are made plural by -ves

calf - calves

half - halves

knife - knives

leaf - leaves

loaf - loaves

life - lives

wife - wives

shelf - shelves

thief - thieves

yourself - yourselves

themselves

4: Some words can have both endings -ves or -s, e.g

scarf - scarfs/scarves

dwarf - dwarfs / dwarves

wharf - wharfs / wharves

handkerchief - handkerchiefs / handkerchieves

First and second options correctly use plural nouns.

dickinson punctuation and lines in her poems to establish a rhythm. each reader will naturally find themselves reading the poem in the same way. she uses the repeating question marks and exclamation points to convey the passion in her words. shelley uses punctuation to paint a picture in the reader's mind. for example, the ellipses after "stand in the dessert" evoke a silence, as it would feel in a deserted, old place.

what lesson are you referencing?