The rise and fall of water in sea and ocean from the normal level is known as Tides. Tides on Earth happen due to gravitational pull of the moon and the Sun. Highest high tides and lowest low tides occur when the sun, the earth and the moon align in a straight line. These are known as Spring tides. Neap tides happen when the moon and the sun align at right angles with the Earth. There is minimum difference between highest high tides and lowest tides during Neap tides.
In this scenario it depends on what the possible options are. If the screen is a just a white surface she would need a projector. If the screen is a monitor screen then she would need an HDMI cable to connect the laptop to the monitor/TV. In some cases laptops do not have a regular HDMI out port which in this case Nancy would need a micro-HDMI to HDMI adapter.
