In the organic compound `CH_2 = CH- CH_2 - CH_2 - C -= CH`, the pair of hybridised orbitals involved in the formation of `: C_2 - C_3` bond is :

Options

A. `sp- sp^2`
B. `sp- sp^3`
C. `sp^2 - sp^3`
D. `sp^3 - sp^3`

Explanation

To determine the pair of hybridized orbitals involved in the formation of the C2-C3 bond in the compound `CH2=CH-CH2-CH2-C≡CH`, we will follow these steps:

### Step 1: Identify the Structure
The compound can be represented as follows:
- C1: CH2
- C2: CH
- C3: CH2
- C4: CH2
...