$14$c$.$ Which of the following is currently true about uni...

Which of the following is currently true about unions?

Multiple Choice

Approximately $20\%$ of full$-$time U$.$S$.$ workers are in unions.

Unions primarily consist of public$-$sector workers.

Unions primarily consist of private$-$sector workers.

Approximately $30\%$ of full$-$time U$.$S$.$ workers are in unions.

Unions are more powerful now than they were in the $1950$s$.$