Which of the sentences below do NOT employ natural language? Select all that apply.
Carson employed his considerable abilities in assessing the condition of the ailing companion animal.
Carson invoked the lessons of his extensive education to evaluate the causes of the beast's maladies.
Carson's educational training allowed him to quickly determine the cause of the animal's sickness.
Carson's expertise in the field of zoological studies permitted him to ascertain the grounds for the animal's ailments.

THIS IS MULTIPLE CHOCIE