What is the most likely reason for the current rise in secularism in Australia? (A) A perception that the responses of religious traditions to enduring questions are outdated (B) Increasing sectarian rivalry between Christian denominations (C) Recent trends in denominational switching (D) Growing interest in New Age religions - HSC - SSCE Studies of Religion - Question 9 - 2013 - Paper 1

This option is the most plausible explanation. Rising sectarian rivalry can lead to disillusionment with traditional religious structures, prompting individuals to distance themselves from organized religion, thus increasing secularism.

Although denominational switching indicates a dynamic religious landscape, it does not directly correlate with a rise in secularism, as individuals are still participating in religious practices.

While there may be a growing interest in alternative spiritual practices, this does not necessarily equate to a decline in religiosity; many may still identify with traditional faiths.