Choose the option that best conveys the meaning of the underlined portion in the following sentence;
The result of his experiment represents a break through in medical science
-
an outstanding success
- catastrophe
- an end to such experiments
- breaking point
- a colossal failure
The correct answer is: A
Explanation
Break through in this context means an instance of achieving success in a particular sphere or activity. It simply means overcoming something and having an achievement. Option A correctly conveys the message.