The requirements for certification in a class action include

Question $4$Select one:

a$.$

proof that the class action will be substantially less convenient than individual proceedings.

b$.$

a clearly defined class and most substantive issues are common to every claimant in that class.

c$.$

proof that all of the claimants are being represented by the same law firm.

d$.$

a payment of bond money to the court, to be used to pay for the defendant's costs if the claim is unsuccessful.