From the words or groups of words lettered A to D, choose the word or group of words that best completes the sentence. If you keep trying, you'll succeed......

From the words or groups of words lettered A to D, choose the word or group of words that best completes the sentence.
If you keep trying, you'll succeed...........the end.

Answer Details

The correct option to complete the sentence is "in". The phrase "succeed in" is commonly used to mean achieve a goal or accomplish something. So, the complete sentence "If you keep trying, you'll succeed in the end" means that if you continue to make an effort to achieve your goal, you will eventually be successful.