In Adobe Photoshop’s Merge to HDR Pro Options, the Exposure slider in the Tone and Details control:

a. Includes more contrast in the image if you push the slider to the left.
b. Includes more contrast in the image if you push the slider to the right.
c. Includes more brightness in the image if you push the slider to the right.
d. Includes more brightness in the image if you push the slider to the left.

c. Includes more brightness in the image if you push the slider to the right.