Which of the following often resented the use of unskilled factory workers in the 1800s? a. craft guilds b. labor unions c. strikebreakers d. trade unions

It's D

I took the test and it was D

it's a very weird question I don't like it, it can be interpreted many ways

the answer would be c. sediment buildup on continental slope

                                                                                -hope this -

answer; being clearly political;