Of the Following Individuals, How Many Are in the Period

Multiple Choice

Of the following individuals, how many are in the period called emerging adulthood?Matthias, who is a 18-year-old college student; Toby, who is a 35-year-old businessman and single father of one daughter; Gunther, who is a 25-year-old law student; Liesl, who is a 13-year-old girl from a Jewish family and has recently celebrated her bat mitzvah.​

A) ​two
B) ​one
C) ​three
D) ​four