According to Bloom's revised taxonomy, the cognitive objective that can be achieved through the following task
"Prepare a PowerPoint presentation on contribution of Indian mathematicians", is

Options

A. remembering
B. understanding
C. analyzing
D. creating

Answer

To determine the cognitive objective that can be achieved through the task of preparing a PowerPoint presentation on the contributions of Indian mathematicians, we will analyze the task in the context of Bloom's revised taxonomy.

### Step-by-Step Solution:

1. **Understanding Bloom's Revised Taxonomy**: Bloom's taxonomy is a framework that categorizes educational goals into different levels of cognitive skills. The levels are:
- Remembering
- Understanding
- Applying
- Analyzing
- Evaluating
- Creating

2. **Identifying the Task**: The task is to "Prepare a PowerPoint presentation on the contribution of Indian mathematicians." This involves researching, organizing information, and presenting it in a structured format.

3. **Analyzing the Cognitive Level**:
- **Remembering**: This involves recalling facts and basic concepts. Simply listing contributions would fall under this level.
- **Understanding**: This involves explaining ideas or concepts. Summarizing the contributions could be considered understanding.
- **Applying**: This involves using information in new situations. This would not apply to just creating a presentation.
- **Analyzing**: This involves breaking information into parts to explore understandings and relationships. While some analysis may occur, the primary task is not focused on this level.
- **Evaluating**: This involves justifying a decision or course of action. This is not the primary focus of the task.
- **Creating**: This involves putting elements together to form a coherent or functional whole. Preparing a PowerPoint presentation requires synthesizing information, designing slides, and presenting it in a new format.

4. **Conclusion**: Since the task requires the creation of a presentation, which involves synthesizing information and presenting it in a new way, the cognitive objective that can be achieved is at the "Creating" level of Bloom's taxonomy.

### Final Answer:
The correct answer is **Option D: Creating**.