const team = {
  name: "Alpha",
  members: ["Carlos", "Diana", "Eve"],

  listMembers() {
    return this.members.map(function (member) {
      return `${this.name}: ${member}`;
    });
  },

  listMembersArrow() {
    return this.members.map((member) => {
      return `${this.name}: ${member}`;
    });
  },
};

console.log(team.listMembers()[0]);
console.log(team.listMembersArrow()[0]);