In the United States, some 55 percent of the labor force

No option seems correct to me.

55% of labor force = need singular verb= sentences containing "is" are ahead in race. A and D are contender.

100 workers= countable noun. Fewer is correct. A is on top.

But I couldn't understood the the use of SOME before 55% of labor force.

How some is correct here!
Explanation will be appreciated.

Imo. A.

This question tests pure grammar rules, such as usage of some as subject or usage of quantitative adjective, fewer and SVA.

In the United States, some 55 percent of the labor force is employed by companies with fewer than 100 workers.

A) some 55 percent of the labor force is employed by companies with fewer - Indefinite pronouns such as “some”, “any”, “none”, “all” and “most” (SANAM) may be singular or
plural depending what they refer to. Let me explain more with following examples,
- Some of the food is cold.
- Some of the vegetables are cold.
The similar rule is applied to percent. It takes a plural verb when followed by of and a plural noun, and takes a singular verb when followed by of and a singular noun. e.g. 80 percent of the cookies were eaten, but only 20 percent of the milk was drunk.
When adjectives of quantity (like much, more, little, less, lots, etc.) are used as subjects, they take a singular verb. - Dear generis, correct me if this is wrong as i read this rule somewhere long ago.
100 workers are countable nouns hence, fewer than is required rather than less, which is to be used for uncountable nouns. So, hold it.

B) some 55 percent of the labor force are employed by companies with less - SVA error and quantified comparative adjective error (as mentioned above).

C) about 55 percent of the labor force are employed by companies with fewer - SVA error.

D) about 55 percent of the labor force is employed by companies who have less - Relative pronoun reference error, who is used for the human beings, so pronoun error and quantified comparative adjective error

E) there are 55 percent of the labor force who are employed by companies with

When adjectives of quantity (like much, more, little, less, lots, etc.) are used as subjects, they take a singular verb. [/color] - Dear generis, correct me if this is wrong as i read this rule somewhere long ago.

- Relative pronoun reference error and SVA error, usage of who is incorrect. Here, who refers to LF ,which is singular and the verb is plural. Subject should never be in the prepositional structure. Hence, sentence structure error.

When adjectives of quantity (like much, more, little, less, lots, etc.) are used as subjects, they take a singular verb. [/color] - Dear generis, correct me if this is wrong as i read this rule somewhere long ago.