He felt very tired. However, he was determined to continue to climb up the mountain. A. He felt so tired that he was determined to continue to climb up the mountain. B. Feeling very tired,

He felt so tired that he was determined to continue to climb up the mountain.

Feeling very tired, he was determined to continued to climb up the mountain

As a result of his tiredness, he was determined to continue to climb up the mountain.

Tired as he might feel, he was determined to climb up the mountain.