From the options provided, the complete gerund phrase in the sentence is:
B. <span>hanging curtains or shades on a window</span>
Gerund is a word which is in its -ing form. It is derived from a verb but acts as a noun.
Rosa Parks was an important person in history. She along with some other African Americans stood up for what they believed in, or in her case stayed seated.
Guests can visit the launch center, countdown clock, and a mission control center
It’s a a summon for peace and rational thinking
