The correct answer is A. neap tide.
A neap tide is a tide with relatively small tidal range. It occurs when the Moon is at first or third quarter, when the Sun and Moon are at right angles to each other as viewed from Earth. This means that the Sun’s and Moon’s gravitational forces are pulling in opposite directions, which reduces the tidal range.
A spring tide is a tide with relatively large tidal range. It occurs when the Moon is full or new, when the Sun and Moon are in line with Earth. This means that the Sun’s and Moon’s gravitational forces are pulling in the same direction, which increases the tidal range.
A diurnal tide is a tide that has two high tides and two low tides each day. This is the most common type of tide in the world.
An ebb tide is a tide that is receding. It occurs when the water level is falling.