Two or more gerunds as the subject, predicate singular or plural? Finding multiple possibilities in architecture and studying on relationships among architecture,human and environment is/are apealing to me.

Two or more gerunds as the subject, predicate singular or plural? Finding multiple possibilities in architecture and studying on relationships among architecture,human and environment is/are apealing to me.

Be sure to use are
Because there are many nouns as the subject of the object complement