**Explanation:**

The correct answer is option 'C' - huge.

A gigantic task refers to an exceptionally large or enormous task that requires a significant amount of effort, resources, and time to complete. In this context, it is evident that a special task force is needed to handle such a massive undertaking. Let's break down the options and understand why 'huge' is the correct answer:

**a) Trivial:** This option is incorrect because trivial means something that is of little importance, significance, or difficulty. However, the task being discussed here is explicitly stated to be gigantic, indicating that it is far from being trivial.

**b) Important:** While the task at hand may indeed be important, this option does not directly address the scale or magnitude of the task. The focus here is on the sheer size and complexity of the task, which is better captured by the term 'huge.'

**c) Huge:** This option is the correct answer. As mentioned earlier, a gigantic task implies that it is of immense size or magnitude. Therefore, a task force specifically designated for handling such a colossal task is necessary.

**d) Gallantry:** This option is incorrect because gallantry refers to heroic or courageous behavior, particularly in the face of danger or difficulty. While a task force may exhibit gallantry during the execution of their duties, this option does not address the size or scale of the task itself.

**e) Victorious:** This option is incorrect because being victorious implies achieving success or winning a battle or competition. While success may be the ultimate goal of the task, the focus here is on the enormous nature of the task rather than its outcome.

In summary, the correct answer is option 'C' - huge because it accurately reflects the magnitude and scale of the task, highlighting the need for a special task force to handle such a colossal undertaking.