Identify the incorrect statement with respect to physical changes that occur in boys during puberty.

The correct option is C Widening of waists
The physical changes that occur in boys during puberty are:

• Increase in height due to bone elongation.
• Develop broader shoulder and arms due to muscle growth.
• The larynx gets bigger and the vocal chords grow longer, thus developing Adam's apple. This leads to a deeper voice in boys.