`{:(" "CH_(3)),(" "|),(CH_(3)-CH-CH-CH-CH_(2)-CH_(2)),(" "| " "|),(" "CH_(2)-Cl CH_(3)):}`
locants at parent carbon chain will be :-

Options

A. 1
B. 2
C. 3
D. 4

Answer

To solve the problem of determining the locants at the parent carbon chain of the given organic compound, we will follow these steps:

### Step 1: Identify the Structure
First, we need to visualize the structure of the compound based on the provided information. The compound consists of a main carbon chain with various substituents.

### Step 2: Draw the Carbon Chain
We start drawing the carbon chain:
- The main chain consists of 6 carbon atoms (C1 to C6).
- The structure includes a chlorine (Cl) substituent and multiple methyl (CH₃) groups.

### Step 3: Number the Carbon Atoms
We will number the carbon atoms in the chain. The numbering should prioritize the substituents:
1. Start numbering from the end nearest to the chlorine atom (the higher priority group).
2. Assign numbers to the carbon atoms from 1 to 6.

### Step 4: Identify Substituents
Now, we identify the substituents on the carbon chain:
- At position 1 (C1), there is a chlorine (Cl) substituent.
- At position 2 (C2), there is a methyl (CH₃) group.
- At position 3 (C3), there is another methyl (CH₃) group.
- At position 4 (C4), there is yet another methyl (CH₃) group.

### Step 5: Count the Locants
Now we can summarize the locants:
- C1: Cl
- C2: CH₃
- C3: CH₃
- C4: CH₃

Thus, we have 4 different positions where substituents are located.

### Final Answer
The total number of locants in the given compound is **4**.

---