In this direct and indirect speech question, the sentence Bunty said, I have done my class work is given in direct speech. Choose the option that best expresses the same idea in indirect speech.

Introduction / Context:
This question checks knowledge of converting direct speech into indirect or reported speech, with correct tense backshift. The direct sentence is Bunty said, I have done my class work. When reporting this later, the tense of have done usually changes to had done, because the reporting verb said is in the past tense. The learner must pick the option that follows standard rules without adding punctuation errors.

Given Data / Assumptions:

• Direct speech: Bunty said, I have done my class work.
• Reporting verb: said (past tense).
• Reported clause: I have done my class work, present perfect tense.
• The indirect speech should be introduced by that in formal writing.

Concept / Approach:
When changing from direct to indirect speech with a past tense reporting verb, the tense in the reported clause is usually shifted one step back. Present perfect have done becomes past perfect had done. The first person pronoun I changes to third person he because Bunty is being referred to in the third person by the reporter. The overall structure becomes Bunty said that he had done his class work. Option b fits this pattern exactly.

Step-by-Step Solution:
Step 1: Identify the reporting verb said and note that it is in the past tense. Step 2: Recognise that the reported speech has present perfect tense have done, which should normally backshift to past perfect had done in indirect speech. Step 3: Change the pronoun I to he, since Bunty is the person speaking and is now referred to by a third person pronoun. Step 4: Introduce the reported clause with that for formal correctness: Bunty said that he had done his class work. Step 5: Compare this result with the options and identify option b as the exact match.

Verification / Alternative check:
We can check the time relationship. In the original, at the time of speaking, Bunty has already completed his class work. When we report this later, we want to show that his completion is earlier than the act of saying, which is itself in the past. The past perfect had done does exactly this. Therefore, Bunty said that he had done his class work correctly preserves the timing between the actions.

Why Other Options Are Wrong:
Option a omits the conjunction that and keeps a comma, which is not standard for reported speech. Option c uses was saying and has done, which is a strange combination and not required here. Option d changes the tense from have done to did, which loses the perfect sense that the work was completed before the time of speaking. Option e keeps has done, which fails to apply the usual backshift in tense and makes the time relationship less clear in formal grammar.

Common Pitfalls:
Students sometimes forget to backshift present perfect to past perfect after a past reporting verb, or they change the tense to simple past without considering the nuance. Others ignore pronoun changes and leave I instead of he. To avoid such mistakes, it is helpful to remember a simple rule: with a past reporting verb, present perfect normally becomes past perfect in reported speech, and pronouns must be adjusted according to the perspective of the reporter.

Final Answer:
The correct indirect speech form is Bunty said that he had done his class work, so option b is correct.