To find out the maximum marks of the test, we need to first understand the given information.

Given:
- The candidate needs to secure 35% marks to pass.
- The candidate secured only 40 marks.
- The candidate failed by 30 marks.

Let's solve this step by step.

Step 1: Determine the passing marks
The passing marks can be calculated using the given passing percentage. We can find this by multiplying the passing percentage with the maximum marks.

Passing marks = (35/100) * Maximum marks

Step 2: Calculate the difference between the passing marks and the obtained marks
The difference between the passing marks and the obtained marks is given as 30 marks.

Difference = Passing marks - Obtained marks = 30 marks

Step 3: Find the maximum marks
To find the maximum marks, we can use the obtained marks and the difference between the passing marks and the obtained marks.

Maximum marks = Obtained marks + Difference

Substituting the given values:

Maximum marks = 40 + 30 = 70

However, this is not the correct answer. We need to find the maximum marks, not the total marks.

Step 4: Calculate the total marks
To find the total marks, we need to use the obtained marks and the passing percentage.

Total marks = Obtained marks / (Passing percentage / 100)

Substituting the given values:

Total marks = 40 / (35/100) = 40 / 0.35 = 114.29

Again, this is not the correct answer. We have found the total marks, not the maximum marks.

Step 5: Calculate the maximum marks
To calculate the maximum marks, we can use the total marks and the passing percentage.

Maximum marks = Total marks / (1 - Passing percentage / 100)

Substituting the given values:

Maximum marks = 114.29 / (1 - 35/100) = 114.29 / (1 - 0.35) = 114.29 / 0.65 = 176.15

Rounded to the nearest whole number, the maximum marks would be 176.

However, the given options do not include 176. The closest option to 176 is 200 marks, which is option C. Therefore, the correct answer is option C, 200 marks.