Rahul fought \(\textbf{tooth and nail to save his company.} \)
Let's analyze the expression "\(\textbf{tooth and nail}\)" to understand its meaning and determine the suitable answer from the given options.
The idiom "tooth and nail" means to fight very fiercely or aggressively, putting all one's effort into overcoming a challenge or adversary. This idiom suggests using all possible means to achieve an objective or protect something.
Let's evaluate the options provided against this understanding:
Based on the explanation above, the phrase "with strength and fury" best captures the meaning of fighting "tooth and nail." Thus, the correct answer is: