Which sentence shows the best placement for the modifier "that was on sale"? Sheila bought soap at the farmer's market that was on sale. Sheila that was on sale bought soap at the farmer's market. Sheila bought that was on sale soap at the farmer's market. Sheila bought soap that was on sale at the farmer's market.

The sentence that shows the best placement for the modifier "that was on sale" is "Sheila bought soap that was on sale at the farmer's market," since it is the only sentence where the modifier is placed next to the noun soap, and, therefore, modifies it.

In the first two sentences, the position of the modifiers suggests that the subjects the farmer's market and Sheila, respectively, were the ones on sale. The third sentence is incorrect as well.

A modifier is a word or phrase that limits or adds to the meaning of another word or phrase.

The best placement for the modifier ' that was on sale' is:

Sheila bought soap that was on sale at the farmer's market.

The sentence: ' Sheila bought soap at the farmer's market that was on sale' indicates that the market was on sale.

The sentence : ' Sheila that was on sale bought soap at the farmer's market' indicates that Sheila was on sale.

The sentence : ' Sheila bought that was on sale soap at the farmer's market' is incomprehensible because of wrong word order.