The word "reserved" is the most suitable choice to fill in the blank because it indicates a lack of outward expression or enthusiasm. If someone becomes reserved in a conversation about a certain topic, it means they become more restrained, quiet, or less willing to openly share their thoughts or feelings. In the given context, it suggests that the person's demeanor changed to a more restrained or withdrawn state when discussing her father.

1. तकनीकी भाषा में ड्रोन एक मानवरहित aircraft है. इन ड्रोनों को औपचारिक तौर पर Unmanned Aerial Vehicles (UAVs) या Unmanned Aircraft Systems (UASs) के नाम से जाना जाता है. ड्रोन वे flying robots होते हैं जिन्हें remote के जरिए control किया जाता है या अपने आप software controlled flight plans, जो कि इसमें लगे sensors और GPS के सहयोग से काम करने वाला embedded system होता है, के माध्यम से उड़ते हैं।

Answer: C) Bengaluru Explanation: Bengaluru city is known as the Electronic City of India. Because Electronic City is an IT hub in Anekal taluk of Bengaluru, Karnataka, India. It is one of India's largest electronic industrial parks in 3 phases i.e, in Konappana Agrahara and Doddathogur villages, Bengaluru.