Answer: having second thoughts about her new job
Explanation:
Wavering means to be doubtful, unsure or uncertain about a particular thing. Someone who wavers is said to falter as the person is faced with an indecision.
When the narrator says "I was wavering in my secret soul", she means that she was having second thoughts about her new job.
Therefore, the answer is option D.
The answer would be D: a relative clause
Answer: A: Cooked food is at a greater risk of bacterial contamination.
Explanation: The possibility of bacterial growth actually increases after cooking, because the drop in temperature allows bacteria to thrive.