How did African Americans become free? Some slaves bought their own
 freedom from their
 owners, but this process became rarer and rarer as the 1800s progressed.
 Many slaves became free through manumission, the voluntary emancipation
 of a slave by a slaveowner. Manumission was sometimes offered because
 slaves had outlived their usefulness or were held in special favor by their
 masters. The offspring of interracial relations were often set free. Some slaves
 were set free by their masters as the abolitionist movement grew.
 Occasionally, slaves were freed during the master's lifetime, and more often,
 through the master's will.
 Which of the following options BEST supports the idea that many
 enslaved people who were set free were probably old?
 Some slaves bought their own freedom from their owners, but this process became rarer and
 rarer as the 1800s progressed.
 Some slaves were set free by their masters as the abolitionist movement grew.
 Occasionally, slaves were freed during the master's lifetime, and more often, through the
 master's will.
 Many slaves became free through manumission, the voluntary emancipation of a slave by a
 slaveowner.