Order the challenges facing social structures as described in the study material:
1️⃣ Declining marriage rates and rising cohabitation
2️⃣ Shift to online learning and digital skills
3️⃣ Globalization and automation of the economy
4️⃣ Polarization and erosion of political trust
5️⃣ Declining church attendance and secularization
6️⃣ Proliferation of online platforms and fake news