Select the meaning of the underlined word in the sentence.

The development of the disease was insidious.

The correct definition is "pondering." "Contemplating" means to think deeply or carefully about something. In this sentence, the individual is deeply considering his financial circumstances, leading to a frustrated conclusion.

The word "insidious" in the sentence means "Gradual." Insidious refers to something that progresses slowly and subtly but with harmful effects, often going unnoticed until it's too late to prevent or mitigate the damage.

The correct sentence is: "The physician wrote a prescription for the needed medicine." This is because a prescription is the right word to use when describing the medication written by a physician. Prescription refers to a written instruction from a physician or medical practitioner to a pharmacist regarding the type and dosage of medication that a patient requires.

The meaning of "assured" in the sentence is "Confirmed the truth of." assure distinctively implies the removal of doubt and suspense from a person's mind. To assure someone means to confirm or give confidence in the validity or truth of something, in this case, the nurse reassured the parents regarding their child's diagnosis.