The latitude is the angular distance of a point on the Earth`s surface, north or south, of the Equator. It is measured from the center of the Earth.

Option 1: Centre of the Earth - This is the correct answer. Latitude is the distance from the Equator to a point on the Earth`s surface, and it is measured from the center of the Earth.

Option 2: Equator - This is a partially correct statement. The Equator is the starting point for measuring latitude, but it does not give the complete definition. Latitude is the distance from the Equator, not the Equator itself.

Option 3: Tropic of Cancer or the Capricorn - This is incorrect. The Tropic of Cancer and the Tropic of Capricorn are lines of latitude, not the starting point for measuring latitude.

Option 4: Poles - This is incorrect. The poles are points on the Earth`s surface, not the starting point for measuring latitude.

In summary, the correct answer is option 1, as it correctly states that the latitude is measured from the center of the Earth.