Answer:
C) The mountain meadow overflowed with wildflowers in shades of yellow, blue, and purple.
Step-by-step explanation:
A) The hikers passed by ancient coast redwood trees great valleys, and massive boulders. (Missing comma after trees,)
B) People love to hike mountain bike, rock climb and ride horses, in the Santa Cruz Mountains. (Need comma after hike, and climb, remove comma after horses.)
D) Foxes, coyotes, and bobcats, are some of the predators that inhabit the forest. (remove comma after bobcats.)