In standard English grammar, the usual word order in a simple affirmative sentence is which of the following patterns?

Introduction / Context:
This question tests your understanding of basic English sentence structure. In many exam passages, questions, and instructions, the order in which subject, verb, and object appear is extremely important for clarity. Knowing the standard or most common pattern helps you both recognise correct sentences and correct faulty ones.

Given Data / Assumptions:
- The question asks about "standard English sentence order".
- It clearly refers to the normal structure of simple, affirmative, declarative sentences.
- The elements involved are Subject (S), Verb (V), and Object (O).
- Several different orders are given as options.

Concept / Approach:
In English, the most common word order in simple statements is Subject–Verb–Object. For example, "Ravi (Subject) eats (Verb) apples (Object)." The subject is the person or thing doing the action, the verb expresses the action or state, and the object receives the action. Other orders appear in questions, imperatives, and poetry, but the basic pattern for normal statements remains SVO.

Step-by-Step Solution:
Step 1: Recall a simple model sentence such as "The child kicked the ball."
Step 2: Identify the subject "The child", the verb "kicked", and the object "the ball".
Step 3: Note the order: Subject first, then Verb, then Object.
Step 4: Match this pattern with the given options and select Subject–Verb–Object.

Verification / Alternative check:
Check a few more sentences: "Birds sing songs" (SVO), "Students read books" (SVO), "Doctors treat patients" (SVO). In each case, subject comes first, followed by verb, then object. Other orders like VSO or OVS appear mainly in questions or rare stylistic constructions, not as the basic rule for affirmative sentences.

Why Other Options Are Wrong:
- Verb–Subject–Object: appears in some questions (for example, "Does Ravi eat apples") but not in basic statements.
- Verb–Object–Subject and Object–Verb–Subject: do not represent normal English statement structure and would create awkward or incorrect sentences if used routinely.
- Object–Subject–Verb: also breaks the natural pattern and would confuse the reader or listener.

Common Pitfalls:
Some learners mix English rules with those of their mother tongue if that language uses a different order such as Subject–Object–Verb. It is important to remember that English places the finite verb directly after the subject in most statements. Keeping SVO in mind will help you in error detection, sentence transformation, and writing tasks.

Final Answer:
The standard English sentence order is Subject–Verb–Object.