Hello,
Your question states:
What type of change will occur when the warm sun reaches icicles hanging from a rooftop?
Your answer would be:
B. Physical Change
Explanation/Reasoning:
When the sun hits icicles what is the icicles going to do there going to melt of course if it’s warm enough which is a physical change.
To help you understand it more think it as this if it’s 103 degrees outside and you started sweating what would be a physical change, color change, or particle change? Of course a physical change.
Have a nice day:)
Hope this helps!
~Rendorforestmusic