Concept:On the number line, smaller numbers are written to the left, so negative numbers with larger absolute value are the least.Explanation:First identify the negative integers: −4,−10,−7.Among these, −10 is the smallest, then −7, then −4.Next, place the positive integer 2 and then 9.So the correct order from least to highest is:−10,−7,−4,2,9Answer:Option A: −10,−7,−4,2,9