Which one of the following techniques is safest for the detection of cancers ?

Options

A. Radiography (X-ray)
B. Computed tomography (CT)
C. Histopathological studies
D. Magnetic resonance imaging (MRI)

Answer

To determine the safest technique for the detection of cancers, we will analyze each option provided in the question step by step.

### Step 1: Analyze Radiography (X-rays)
- **Explanation**: Radiography involves the use of X-rays, which are a form of ionizing radiation. While useful for imaging, prolonged exposure to X-rays can increase the risk of cancer due to radiation exposure.
- **Conclusion**: This method is not considered the safest.

### Step 2: Analyze Computed Tomography (CT scan)
- **Explanation**: A CT scan also utilizes ionizing radiation to create detailed images of the body. Similar to X-rays, repeated exposure can pose risks, including radiation-induced cancers.
- **Conclusion**: This technique is also not the safest.

### Step 3: Analyze Histopathological Studies
- **Explanation**: Histopathological studies involve examining tissue samples under a microscope. While this method is crucial for confirming cancer diagnoses, it is time-consuming and has a higher chance of human error in interpretation.
- **Conclusion**: This method is not the safest due to its invasive nature and potential for errors.

### Step 4: Analyze Magnetic Resonance Imaging (MRI)
- **Explanation**: MRI uses strong magnetic fields and radio waves to generate images of organs and tissues. It does not involve ionizing radiation, making it a non-invasive technique with no associated radiation risks.
- **Conclusion**: MRI is the safest method for detecting cancers among the options provided.

### Final Answer
- The safest technique for the detection of cancers is **Magnetic Resonance Imaging (MRI)**.

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