The form of energy that flows from hot object to a cold object is called

$(a)$ Metal feels colder compared to wood. True

$(b)$ Metal conducts heat more than wood. True

$(c)$ Reflects more heat than wood. False (reflection not relevant; conduction matters)

$98.6^\circ\mathrm{F} > 98^\circ\mathrm{F}$.

$(a)$ $X$ has higher body temperature than $Y$. True

$(b)$ $X$ has lower body temperature than $Y$. False

$(c)$ Both have same body temperature. False

$(a)$ Water from $20^\circ\mathrm{C}$ to boil needs more heat/time than from higher temperature. True

$(b)$ Water from more than $50^\circ\mathrm{C}$ but less than $80^\circ\mathrm{C}$ needs more heat. False (needs less than from $20^\circ\mathrm{C}$)

Heat flows from higher $T$ to lower $T$.

$(a)$ Flow from iron to water. True

$(b)$ Flow from water to iron. False

$(c)$ Flow from mug to ball or ball to mug. False