Select the abbreviation that tells how the italicized noun clause is used.
S-subject, DO-direct object, SC-subject complement, OP-object of preposition
I am optimistic enough to believe that young people will respond to a challenge.
S
OP
SC
DO
S-subject, DO-direct object, SC-subject complement, OP-object of preposition
I am optimistic enough to believe that young people will respond to a challenge.
S
OP
SC
DO