Answer:
A. It helped sailors steer around rocky coasts.
Step-by-step explanation:
An astrolabe is an elaborate inclinometer. An inclinometer is an instrument used for angles of slope, elevation, or depression with respect to gravity's direction. It is also used as a tilt sensor, tilt indicator, slope meter, slope gauge.
A. It helped sailors steer around rocky coasts.
Rocky coasts are dangerous. In order to maneuver them, the sailors used an astrolabe. This helped them to understand the angles of slopes, elevation, depression of several rocks on sea.
B. It aided navigators in predicting the weather.
An astrolabe cannot predict the weather.
C. It allowed sailors to know their north-south location.
A compass is used for this purpose.
D. It kept crews from getting sick.
An astrolabe is not a medicinal equipment.