Please help me, please

D. Children are in danger because of the road conditions on Green Street.

Explanation:

An inference is a conclusion made based on pieces of evidence and reasoning. When we're reading a text, we can make various inferences based on the details we're offered. Not all information is presented explicitly, which is why this process is very important. That is the only way we will fully understand the text.

Based on the text you were given, we can conclude that children are in danger because of the road conditions on Green Street. We're told about how close to children cars and trucks are and how lucky we are that the number of accidents is relatively low. These are the details that lead us to this conclusion. This is why option D is the correct one.

The rest of the options aren't supported by details offered in the text, which is why they are incorrect.  

a low four-wheeled open carriage of a kind formerly used in russia.