Climate regions are classified mainly on the basis of a. latitude and elevation b. temperature and precipitation c. location and landforms d. distance from the equator

ANSWER:

The most widely used factor for the classification of climates is on the basis of temperature and precipitation.

EXPLANATION:

There are many classification systems among them the most common and widely used is the "Koppen Climate Classification System". In this system of classification 'temperature' plays a vital role.

In The Koppen Climate Classification System the climate classification is as follows:

Tropical Moist Climates, Dry Climates, Moist Mid-latitude Climates, Moist Mid-Latitude Climates, and Polar Climates. The temperature taken in count is the monthly average.

It's probably because some types of violets are blue

Answer b is the answet