The relative proportions of the different types of white blood cells are: Neutrophils (roughly 60 – 70%), Lymphocytes (roughly 20 – 30%), Monocytes (approximately 1 – 6%), Eosinophils (approximately 1 – 3%), Basophils (less than 1%).
Thus, the correct answer is 'Neutrophils --> Lymphocytes Monocytes --> Acidophils -->Basophils.'