Me asap you! shiloh wanted to observe the changes that occurred during an exothermic reaction. he monitored the changes and placed them in a chart. which statement best describes his data? the activation energy was reached at 10: 45 a. m. without the additional energy, the reaction would have stopped. the activation energy was reached at 11: 15 a. m. the previous change was the threshold point for a reaction. the activation energy was reached at 10: 15 a. m. the additional energy allowed for a lower activity level. the activation energy was reached was 10: 45 a. m. the additional energy did not affect the reaction.