Step 1: Understanding the Concept:
Financial institutions (like banks, investment firms) perform systemic roles that impact the macro-economy.
Step 2: Detailed Explanation:
1. Capital Formation (A): By mobilizing savings and directing them into investments, these institutions build the capital of a nation. This is a core role.
2. Risk Management (B): Through insurance, hedging, and diversified lending, they manage and distribute financial risks. This is a core role.
3. Inclusive Finance (C): Modern financial institutions work towards financial inclusion—bringing banking services to the unbanked and marginalized sections. This is a core role.
4. Arbitration (D): Arbitration is a legal process for settling disputes outside of court. It is a role of legal bodies or specialized mediators, not a standard economic role of financial institutions.
5. Consultation (E): Helping an intern with a project report is a minor administrative task, not a macro-economic "architectural" role of a financial institution.
Step 3: Final Answer:
Only (A), (B), and (C) represent the significant economic roles mentioned in the question prompt.