Spring tides are caused by The sun and moon being in a right angle with the earth The sun and moon being at a 45 degree angle with the earth The sun, moon, and earth are all in a line None of the above

Spring tides are caused by the sun, moon, and earth all being in a line. This alignment occurs during the full moon and new moon phases, when the gravitational forces of the moon and the sun combine to produce higher high tides and lower low tides. Therefore, the correct answer is:<br /><br />The sun, moon, and earth are all in a line.