Answer:
SERIAL MONOGAMY.
Step-by-step explanation:
Monogamy can be defined as a kind of relationship in which one has only one partner throughout a lifetime.
Serial monogamy (is a type of marital monogamy) describes a marriage to only a partner at a time, unlike bigamy and polygamy.
Serial monogamy is characterized by several successful, short-term marriages over a lifetime.
In serial monogamy, a person is allowed to have series of marriages but the person must be married to one person at a time.
Therefore, a succession of marriages in which a person has several spouses over a lifetime but is legally married to only one person at a time is SERIAL MONOGAMY.