Q.1) Indo-Pacific Quad was formed in 2007 by India, US, Japan and Australia but it lay dormant since withdrawal of Australia in 2008. What are the reasons which triggered its revival in 2017 and also explain its relevance for India specifically?

Q.1) Indo-Pacific Quad was formed in 2007 by India, US, Japan and Australia but it lay dormant since withdrawal of Australia in 2008. What are the reasons which triggered its revival in 2017 and also explain its relevance for India specifically?