If you follow this rule for topographic maps, you can determine if a point is higher or lower than the contour line it is near:
a. if the point is outside the contour line, it is lower than the line. if the point is inside the contour line, it is higher than the line
b. if the point is outside the contour line, it is higher than the line. if the point is inside the contour line, it is lower than the line.
c. if the point is outside the contour line, it is equal to the lower line. if the point is inside the contour line, it is equal to the higher line.

Explanation:

A contour line is a two variables function, applied in topography to show different heights in a field. The image attached shows a 2D perspective a surface, the lines are contour lines.

So, as you can see in the image, inside the ''circles'' is higher that outside the circles, giving and nice perspective to the eye.

Furthermore, there are rules to contour lines, one of them says: ''Contour lines close to form circles and the inside of the circle is the top of a hill''. Which gives us the answer.

the answer is c cumulus. cumulus clouds can be seen on a gray and rainy day, because cumulus clouds create thunderstorms. give me brainliest if right.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.