Answer:

The given sequence is: 6, 4, 10, 14, 43, ?

To find the missing number in the sequence, let's analyze the pattern:

Pattern:
- The difference between the first two numbers is 6 - 4 = 2.
- The difference between the second and third numbers is 10 - 4 = 6.
- The difference between the third and fourth numbers is 14 - 10 = 4.
- The difference between the fourth and fifth numbers is 43 - 14 = 29.

Observation:

From the pattern, we can see that the differences between the numbers are not following a consistent pattern. Therefore, we need to analyze the pattern differently.

Let's consider the position of each number in the sequence:

Positions:
- The first number is at position 1.
- The second number is at position 2.
- The third number is at position 3.
- The fourth number is at position 4.
- The fifth number is at position 5.

Pattern in Positions:
- The difference between the positions of the first two numbers is 2 - 1 = 1.
- The difference between the positions of the second and third numbers is 3 - 2 = 1.
- The difference between the positions of the third and fourth numbers is 4 - 3 = 1.
- The difference between the positions of the fourth and fifth numbers is 5 - 4 = 1.

Observation:

From the pattern in positions, we can see that the differences between the positions are constant and equal to 1.

Using the Pattern:

To find the missing number, we need to determine the position of the missing number. Since the difference between the positions is constant and equal to 1, the missing number will be at the position 6.

Therefore, the missing number can be found by adding the difference between the positions (1) to the last position (5):

5 + 1 = 6

So, the missing number in the sequence is the number at position 6.

Answer: Option A) 119