The correct answer is option 1 - Coriolis effect is weakest here. The Coriolis effect is the deflection of moving objects, such as air or water, caused by the rotation of the Earth. It is a crucial factor in the formation and movement of hurricanes.

The Coriolis effect is strongest at the poles and weakest at the equator. This is because as we move closer to the poles, the rotational speed of the Earth decreases, resulting in a stronger Coriolis effect. Conversely, as we move closer to the equator, the rotational speed of the Earth increases, leading to a weaker Coriolis effect.

Hurricanes are large rotating storm systems that require the Coriolis effect to initiate rotation. The weak Coriolis effect near the equator prevents the storms from gaining the necessary rotation to develop into hurricanes. Additionally, the weaker Coriolis effect makes it difficult for hurricanes to maintain their strength and move consistently near the equator.

Therefore, hurricanes rarely form or move within 5 degrees of the equator because the Coriolis effect is weakest there.