What does it mean to say that labor has a "concrete" side $($or nature, or even dimension$)$ in capitalism?

Group of answer choices

It means that labor is always physical and hands$-$on$,$ like farming or factory work, rather than mental or creative.

It means that labor always creates value in the market, no matter what kind of work is being done.

It means that workers are paid based on the number of hours they work or the number of things they produce.

It means that every kind of work involves doing something specific and useful $$ like sewing clothes, driving a bus, or writing code $$ that helps make a product or provide a service.