Transform the following sentence from interrogative to assertive sentence:
What though we fail the exam?
A)It does not matter much though we fail the exam.
B)It does not matter that we fail the exam.
C)It does now matter how we fail the exam.
D)It does not matter but we fail the exam.

Hint: The meaning of the word assertive is to convey a thought in a direct way.

Complete step-by-step answer:

 In this question, let us take a look at the various types of sentences. There are four types of sentences. An assertive sentence is used to make a simple statement or declaration and always ends with the punctuation of full-stop. An imperative sentence is used to make a request or to give a command and usually ends with a full-stop. An interrogative sentence asks a question and ends with a question mark. The exclamatory sentence is used for extreme emotions such as anger, happiness, and excitement and ends with an exclamation mark.
To convert the given sentence from interrogative to assertive, we need to remove what as well as the question mark. In place of what we must then insert the phrase, it does not matter. To join the two halves of the sentence, this phrase must be followed by ‘that’.
With this, let us take a look at the given options.
Option C is incorrect as the sentence does not convey any meaning. Options A and D are incorrect as it used though and but instead of that.
Hence, the correct answer is option B as it follows all the requirements while also conveying a meaning.

Note: Another name for the assertive sentence is a declarative sentence. Do not get confused as it is used in place of each other.