The correct option is D Time spent on Snapchat by people is 20 minutes.
According to the bar graph,
time spent on Facebook is 35 minutes and time spent on Twitter is 40 minutes.
Thus, people preferred Twitter over Facebook.
People spent 60 minutes on Whatsapp, 50 minutes on Text messaging and 20 minutes on Snapchat.
Thus, time spent on Whatsapp(60 mnts) is thrice(and not twice) the time spent on Snapchat(20 mnts).
Also, people spent more time on WhatsApp when compared to all the other communication types.