Final answer:
To increase the sharpness of a picture by 50%, one would typically adjust the setting manually in the Picture Tools tab or similar feature of the photo editing software, if the software lacks a specific sharpen filter or button.
Step-by-step explanation:
To increase sharpness of a picture by 50%, the specific steps to take depend on the software you are using. However, without specific options like 'Apply the Sharpen 50% filter' or a clear 'Increase Sharpness' button, the most universally applicable approach would be to adjust the sharpness settings manually.
Therefore, the correct answer would likely be (d) Adjust the sharpness in the Picture Tools tab by 50%, presuming the editing software or platform has a Picture Tools tab or a similar feature where sharpness can be controlled numerically or with a slider.
Adjusting sharpness can enhance the details and make the image appear more defined. This operation can be crucial for both printing and screen display. It is essential to do this carefully to avoid over-sharpening, which could lead to unnatural looking images with excessive noise or artifacts.