Complete the Odd Integer Series: Identifying the Missing Numbers in 2n-1

To solve this problem, let's analyze the sequence defined by $2n - 1$, which produces a series of odd numbers. We can identify each term as follows:

• First term ($n = 1$): $2 \times 1 - 1 = 1$
• Second term ($n = 2$): $2 \times 2 - 1 = 3$
• Third term ($n = 3$): $2 \times 3 - 1 = 5$
• Fourth term ($n = 4$): $2 \times 4 - 1 = 7$
• Fifth term ($n = 5$): $2 \times 5 - 1 = 9$

Therefore, the two missing numbers in the sequence after 5 are 7 and 9, following the pattern of odd numbers.

The series is thus completed to be: $1, 3, 5, 7, 9$.

In examining the given choices, the correct answer is $7, 9$.