Traditional classifications tended to take into account a) extinct organisms b) rna similarities c) dna similarities d) generals similarities in appearance

d. generals similarities in appearance

Explanation:

Classification in biology is the science of identifying, naming and grouping organisms into different categories.

Organisms were earlier grouped based on superficial attributes such as body similarity, habitat, etc. This system of classification is referred to as traditional or artificial system of classification.

Natural system of classification classify organisms based on mode of nutrition, complexity of body, complexity of cell, evolutionary relationships, etc.

The correct option is d.

hello there the answer is d

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question