HEL! ILL GIVE BRAINLIEST Sylvie a grand-père.

a. un

B
une

C
des

D
de

E
d'

so your choices can be either un or une

Explanation: of would not make sense

un=a

une=a

des=of

de=of

d'=of

Une if Sylvie is a girl and un if not

Fold mountains are created where two or more of Earth's tectonic plates are pushed together. At these colliding, compressing boundaries, rocks and debris are warped and folded into rocky outcrops, hills, mountains, and entire mountain ranges. Fold mountains are created through a process called orogeny.