The spiral model was originally proposed by

(i) IBM
(ii) Barry Boehm
(iii) Pressman
(iv) Royce

Question

The spiral model was originally proposed by

(i) IBM
(ii) Barry Boehm
(iii) Pressman
(iv) Royce

Accepted Answer

### Solution

**Correct Answer: (ii) Barry Boehm**

#### Explanation
The **Spiral Model** was originally proposed by **Barry Boehm** in his 1986 paper *"A Spiral Model of Software Development and Enhancement"*.

It is a **risk-driven** evolutionary process model that combines features of the Waterfall and Prototyping models.

#### Why other options are incorrect:
- **(i) IBM** - Associated with early software processes but not spiral model
- **(iii) Pressman (Roger Pressman)** - Author of SE textbook, explained the model but did not propose it
- **(iv) Royce (Winston Royce)** - Proposed the **Waterfall Model** (1970), not Spiral

#### Key Points to Remember:
- **4 Quadrants of Spiral:** 1. Objective Setting 2. Risk Assessment & Reduction 3. Development & Validation 4. Planning
- Best suited for **large, complex, high-risk** projects.

> **Answer: (ii) Barry Boehm**

Solution

Explanation

Why other options are incorrect:

Key Points to Remember:

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