Which mnemonic is used to remember the relationship "True to compass"?

The correct answer utilizes the mnemonic "Truly Valiant Marines Don't Cry At Weddings" to help recall the principle of "True to compass." This phrase serves as a memory aid indicating the adjustment from True North to Magnetic North, highlighting a crucial aspect of navigation and compass use.

Each word in the mnemonic corresponds to a specific adjustment you need to make when transitioning from true headings to magnetic headings. The idea is that, in navigation, mariners must be aware of how their instruments reflect the Earth's magnetic fields, which can vary significantly from true geographic locations.

Understanding this relationship is vital for accurate navigation, as it ensures that navigators can compensate for magnetic variation and improve the precision of their directional courses. The other options, while creative, do not relate to the true-to-compass relationship found in standard navigational practices. Thus, "Truly Valiant Marines Don't Cry At Weddings" effectively encapsulates the necessary information for recalling this key navigational principle.