Which of the following is a method of controlling fire when visibility is limited?

The method of controlling fire when visibility is limited is Continuous Fire. This approach allows for a sustained barrage of artillery fire, which helps to maintain pressure on the enemy and can compensate for difficulties in observing the effects of fire. When visibility is reduced, such as in fog, smoke, or dark conditions, it becomes challenging to adjust fire based on visual feedback. Continuous Fire mitigates this issue by allowing for ongoing fire that can cover a larger area, ensuring that even if specific targets cannot be observed, firepower is still effectively applied in the general vicinity of the enemy.

In contrast, other methods like Time to Target or Duration focus on specific aspects of artillery operations but do not directly address the challenges posed by limited visibility. Check Fire is a safety procedure to halt fire, typically used to assess situations or correct issues when there is a concern, rather than a proactive method of maintaining control in low visibility.