The main idea of the paragraph is that women should be credited for much more during the prehistoric times that they are at the moment. We only get the picture of them being rather irrelevant at the time which is obviously not true, based on this excerpt. The paragraph is quite feminist, meaning that it is shedding light on actual history and the role of women in such a society which not much is spoken about in contemporary analyses. 
They were the ones who invented gardening, as well as pottery and weaving. The reason why they did this was because they often stayed 'at home' taking care of children, so they had time to do other things as well, while men were out hunting and providing for the family in other ways. Thus we have solid proof that women were far more creative and responsible for various things than they are credited for now.
        
             
        
        
        
Answer: DEFINITELY A. The others make absolutely no sense.
Explanation:
 
        
             
        
        
        
A man (or a human to be politically correct). In Greek mythology, a monster in the city of Thebes called the Sphinx would ask this question to any passerby and if they couldn't answer it correctly, the Sphinx would eat him/her. In the morning, the man is a baby and he crawls on fours. In the afternoon, a man is grown and walks on two feet. In the evening, the man is old and requires a cane to walk. The man who solved this riddle was Oedipus who, upon solving it, caused the Sphinx to fling herself off a cliff and commit suicide.
        
             
        
        
        
Answer:
D
Explanation:
It is D because the tubular flowers are being favored in some way from the hummingbirds perspective, also the tubular flower is being directly stated so it 8s a "particular" flower.