Write the correct answer from the given four options:
`4a` equals

Options

A. ` 4+a`
B. ` 4 xx a `
C. ` a xx a xx a xx a `
D. ` 4 / a `

Answer

To solve the problem, we need to understand what `4a` represents in algebra.

### Step-by-Step Solution:

1. **Identify the expression**: The expression given is `4a`. This means 4 multiplied by the variable `a`.

2. **Understand the multiplication**: In algebra, when we have a coefficient (like 4) and a variable (like `a`), we can express this as a product. So, `4a` is simply the product of 4 and `a`.

3. **Look for equivalent forms**: The question asks what `4a` equals. Since `4a` is already in its simplest form, we can say that `4a` equals `4a`.

4. **Choose the correct option**: If the options provided include `4a`, then that is the correct answer.

### Final Answer:
`4a` equals `4a`.