Select the most appropriate option to fill in the blank.
The new Vande Bharat trains will have some additional ______ such as emergency windows for evacuation, disaster lights etc.

Correct option is C

The correct option to fill in the blank is (c) features.
• Features refer to distinctive or notable elements of something, especially in machines or products. (विशेषताएँ)
• Since the sentence lists emergency windows and disaster lights, these are correctly referred to as “features.”
Example: This new phone has great features like facial recognition and a high-speed processor.
Why other options are incorrect:
· (a) types – Categories or kinds (प्रकार) – does not refer to individual elements
· (b) qualities – Characteristics (गुण) – too abstract for physical components
· (d) pieces – Parts (टुकड़े / भाग) – incorrect for describing enhancements