Question

Cancer is a disease in which abnormal cells divide at an uncontrollable rate. Over time, many different techniques have been used in an attempt to answer the following scientific question, "How can cancerous tumors be killed in a way that causes the least amount of damage to the patient's normal tissues and cells?"
In 1600 BC, Egyptians tried to kill tumors using a "fire drill."

In the 1000s, Persian doctors tried to kill tumors using chemicals, such as arsenic. Over time, new chemicals have been synthesized, and this technique is still being used in cancer treatment today.

In the 1700s, European doctors tried to surgically remove tumors, but this technique did not become effective until later when antiseptics and anesthesia were invented. The invention of laser technology and surgery in the 1900s also greatly improved the effectiveness of this form of treatment.

In the late 1800s and early 1900s, French doctors began using radiation therapy. This technique, which is also still being used today, has been improved with the invention of CT and MRI scanners and better particle accelerators which help doctors to more clearly identify the location of tumors and focus the radiation on the tumor itself rather than on adjacent tissue.
The above example shows how
A.
certain scientific questions can be answered through the invention of new technological designs.
B.
all scientific questions can only be answered through controlled scientific experiments.
C.
it is impossible to answer any scientific questions.
D.
all of these

Answer 1

A. Certain scientific questions can be answered through the invention of new technological designs.

Explanation: The passage shows how advances in technology (antiseptics, anesthesia, lasers, CT/MRI, particle accelerators) enabled better ways to kill tumors with less harm to normal tissue.