Skim the text below to determine the main focus of the group's weekend plans:
'The group chat was buzzing with ideas for Saturday. Liam suggested a hike up the nearby mountain trail, mentioning the beautiful views from the top. Chloe preferred a picnic at the lake, emphasizing how peaceful it would be. Maya chimed in about renting bikes to explore the forest paths. Everyone seemed keen on spending time outdoors, enjoying nature and fresh air, rather than staying cooped up inside.'
Based on a quick skim, what is the main theme of their weekend plans?
A) They are planning a movie marathon at home.
B) They intend to do some extensive gardening.
C) They are focusing on outdoor recreational activities.
D) They want to complete a group study project.
E) They are organizing a cooking competition.