ICAO Annex 14 Volume I
CHAPTER 5. Visual aids for navigation
5.3.4 Approach lighting systems

B.— Non-precision approach runway

Where physically practicable, a simple approach lighting system as specified in 5.3.4.2 to 5.3.4.9 shall be provided to serve a non-precision approach runway, except when the runway is used only in conditions of good visibility or sufficient guidance is provided by other visual aids.

Simple approach lighting system

5.3.4.2 A simple approach lighting system shall consist of a row of lights on the extended centre line of the runway extending, whenever possible, over a distance of not less than 420 m from the threshold with a row of lights forming a crossbar 18 m or 30 m in length at a distance of 300 m from the threshold.

The figure shows a simple approach lighting system. According to ICAO Annex 14, a simple approach lighting system is used for non-precision runways, and non-precision approaches can be executed in such runways. ILS is a precision approach type, so it cannot be executed. So the only appropriate answer to this question is "Visual Approaches".