Which statement best describes frustration?
a. when you achieve your goals despite certain events
b. when you can't retrieve your gold because you are not trying hard
c. when you can't achieve your goal due to events beyond your control
d. when you can't achieve your goals because you had a poor plan

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.