A report on acid rain concluded that "most forests have not been damaged by acid rain. " And opponents insisted that it should be summarized as, "most forests do not show obvious symptoms of acid rain damage, such as abnormal leaves, growth rate Slower or higher mortality. ". Which of the following, if true, would best support the opponent's point of view? ? ['Some forests in the area are currently being damaged by acid rain.', 'The degree of damage caused by acid rain varies between different forests.', 'Acid rain may be causing damage that is not yet apparent.', 'Report does not compare acid rain damage to forests in this area with other areas.']