Explanation:

Let’s break down the problem and explain each option:

- Vowel percentages:

- A = 20%

- E = 45%

- I = 15%

- O = 8%

- U = 12%

- Pairs to consider: With 5 vowels, there are 10 unique pairs.

- We need pairs where the chance of at least one vowel in the pair is more than 34%. Only E has >34% occurrence.

- So, pairs containing E are:

- (A, E), (E, I), (E, O), (E, U)

- That's a total of 4 pairs.

Now, let’s check the options:

- Option 1: 4 ( Correct, matches the calculation)

- Option 2: 5

- Option 3: 6

- Option 4: 7

Correct Answer:

Option 1: 4 pairs