Step 1: Break down the abbreviation.
PMAY stands for Pradhan Mantri Awas Yojana, a flagship housing scheme of the Government of India.
Step 2: Understand the scheme.
Launched in 2015, PMAY aims to provide affordable housing to all eligible urban and rural beneficiaries by 2024 under the vision of 'Housing for All'.
Step 3: Eliminate incorrect expansions.
'Prime Minister Awas Yojana' misses 'Pradhan Mantri', while 'Award Yojana' and 'Army Yojana' are incorrect expansions entirely.
\[ \boxed{\text{Pradhan Mantri Awas Yojana}} \]