Mildred is injured while vаping а "Drаgоn Smоke" pоd. Her attorney asks the judge to allow Mildred to sue on her own behalf and on behalf of all others injured while vaping a "Dragon Smoke" pod. The judge considers whether all the other plaintiffs will have similar facts and legal claims and whether the attorney can adequately protect the interests of all the plaintiffs. What is the judge considering?