Final answer:
The first stage of RCIA, mystagogy, is not the most neglected part of the process.
Step-by-step explanation:
The statement that the first stage of RCIA, mystagogy, is the most neglected part of the process is false. Mystagogy is actually the final stage of the RCIA (Rite of Christian Initiation of Adults) process, not the first stage. It is the period after initiation where new members of the faith are further initiated and deepen their understanding of the faith. This stage is important for continuing spiritual growth and integration into the Christian community.