Besides, dictionary definitions at the beginnings of papers rarely add anything to the discussion. The word different is often redundant, as in several different options or many different participants . Since you can't have several of the same option or many of the same participant, several options and many participants will do nicely. Direct and Indirect Objects. The indirect object is used most often for the recipient in verbs of giving.
Examples are clearer than definitions.
Suggestions is the direct object, him the indirect object. See Transitive versus Intransitive Verbs .