Step-by-step explanation:
The one with the smallest specific heat .....this will heat up the most degrees per calories
assume you have 1 gm of each substance and you want to heat it up 1 degree C
then gold will require .0308 cal
water 1 cal
copper .092 cal
ethanol .588 cal
so gold will require fewer calories to change temp 1 C ....or will heat up the most