The correct answer is C) look for another daymark to form the range. The Light List indicates that a dayboard is a type KGW, which means it is a green and white daymark. This type of daymark is typically used to mark the sides of a navigation channel, and it is important to look for another daymark to form a range in order to determine the correct course of travel. The other answer choices are incorrect because: A) a green and white diamond is not the correct description of a type KGW dayboard; B) you should not pass a dayboard close aboard on either side, as it is intended to mark the sides of the channel; and D) leaving the dayboard to port when southbound on the Atlantic Coast ICW would be the incorrect side to pass it on.