Contagious yawning is linked to:
AHunger
BEmpathyCORRECT
CEyesight
DOxygen levels
IELTSReading
AI
Toaster Teacher
Why the answer is B, and why the others tempt you.
The passage links contagious yawning to empathy, stronger among close relationships.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →
Practice more Reading questions
IELTS Reading has thousands more questions like this — with Worked answers on every one.