Sound and Music - Mission SM5 Detailed Help

A guitar string has a set of natural frequencies at which they naturally resonate at. The following numbers represent sets of frequencies. Which would be a set of typical natural frequencies for a guitar string?

Natural Frequencies and Harmonics:
Every object has a natural frequency or a set of natural frequencies at which it tends to vibrate at. When struck, plucked, strummed or somehow disturbed, the object will vibrate at one of the natural frequencies in its set of natural frequencies. These individual frequency values are often referred to as the harmonic frequencies of the string or air column. The lowest harmonic frequency is referred to as the fundamental frequency. The other frequency values in the set of natural frequencies are whole number multiples of the fundamental frequency value.