Step 1: Understanding the Concept:
Let's define the key terms:
Aptitude: A natural ability or potential to learn a particular skill. Ananya's pursuit of a medical career suggests an aptitude for science.
Personality: An individual's unique and relatively stable patterns of thinking, feeling, and behaving.
Interest: A preference for engaging in a particular activity. It is driven by enjoyment and curiosity, not necessarily by skill level.
Intelligence: The overall capacity to understand the world, think rationally, and use resources effectively when faced with challenges.
Step 2: Detailed Explanation:
The question states that Ananya plays the guitar and sings in her free time because it "lifts her spirits," even though she is "not a great singer." This indicates that she engages in the activity for pleasure and emotional satisfaction, not because she has a high level of skill or potential in it. This perfectly matches the definition of an interest. Her aptitude is in the science stream, which she is pursuing as a career.
Step 3: Final Answer:
The attribute described is an Interest, as it is an activity Ananya enjoys and chooses to do in her leisure time for personal fulfillment, regardless of her skill level.