Explanation:

The Quadrilateral Security Dialogue also known as Quad is an informal strategic grouping consisting of India, US, Australia and Japan

• The countries held consultations on their collective efforts for a free, open and inclusive Indo-Pacific region. The consultations also underscored Quad’s intention of continuing with close coordination and collaboration among themselves in support of sustainable, private sector-led development, maritime security of the region and of good governance.
• The Quad (or QSD) is committed to preserving and promoting the rules-based order in the Indo-Pacific region. At this meet they reaffirmed their shared commitment.
• The Quad call for an open Indo-Pacific region (which is a bio geographic region) is because China has been trying to expand its military presence in the Indo-Pacific.