Which Hindi film won the Best Picture award at the International Indian Film Academy (IIFA) Awards ceremony in 2014?

Introduction / Context:
This question belongs to Indian cinema and film awards. The International Indian Film Academy (IIFA) Awards recognise excellence in Bollywood films. The Best Picture category is one of the most prominent. Here we are asked which film won that honour at the 2014 IIFA Awards.

Given Data / Assumptions:

• The award is Best Picture at IIFA.
• The relevant year is 2014.
• The options list popular Hindi films from around that period.
• We must identify the film that actually received the award.

Concept / Approach:
Bhaag Milkha Bhaag, a biographical sports drama based on the life of Indian sprinter Milkha Singh, received critical acclaim and several awards. At the 2014 IIFA Awards, it won the award for Best Picture. The other films listed, such as Chennai Express, 3 Idiots, Barfi and Yeh Jawaani Hai Deewani, are successful and popular but did not win that specific award in that year.

Step-by-Step Solution:
Step 1: Link the year 2014 with the films in circulation and awards ceremonies held around that time. Step 2: Recall that Bhaag Milkha Bhaag received multiple honours for its portrayal of Milkha Singh and its strong performances. Step 3: Note that IIFA 2014 recognised Bhaag Milkha Bhaag as Best Picture. Step 4: Consider that 3 Idiots is an earlier film whose major award wins took place closer to its release around 2009 to 2010. Step 5: Observe that Chennai Express, Barfi and Yeh Jawaani Hai Deewani had their own nominations and wins but did not take the Best Picture trophy at IIFA 2014. Step 6: Therefore select Bhaag Milkha Bhaag as the correct answer.

Verification / Alternative check:
Award summaries from IIFA 2014 show that Bhaag Milkha Bhaag won multiple awards including Best Film (Best Picture), with honours also going to the director and lead actor. The other listed films either competed in different years or categories. Checking official IIFA records or reliable entertainment news reports confirms this result.

Why Other Options Are Wrong:
Chennai Express was a major box office success, but it did not win the IIFA 2014 award for Best Picture. 3 Idiots is an earlier film and received its major awards several years before 2014, so it is not the correct answer for this particular ceremony. Barfi is critically acclaimed but did not take the Best Picture award at the specific IIFA edition referenced here. Yeh Jawaani Hai Deewani was popular with audiences but did not win this top category at IIFA 2014.

Common Pitfalls:
Candidates sometimes pick their favourite or the most commercially successful film rather than remembering the actual award outcome. Another trap is mixing up different award shows, such as Filmfare or National Awards, with IIFA. A good habit is to connect each major award winning biographical film with the specific ceremonies where it was honoured, which in this case points clearly to Bhaag Milkha Bhaag at IIFA 2014.

Final Answer:
The film that won the Best Picture award at IIFA 2014 was Bhaag Milkha Bhaag.