Gamma rays have photons with the highest energy of electron volts that range greater than 100 eV which lets them in pass through different kinds of materials, and the photons waves have the shortest wavelength. Can someone please revise this into one simple sentence like about 10 words

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.