Which is more flexible, orthodoxy or dogma?

In general terms, dogma is considered to be more flexible than orthodoxy, since dogma is something that one devises over the course of life and experience, whereas orthodoxy is unchanged

The dogma is considered more flexible, due to the orthodoxy/dogma is something that one devises over the course of life and experience, whereas orthodoxy is unchanged. So, that leaves dogma.

3and 4 and 5 are correct