Nguyễn, your opening paraphrase is not as accurate as it should be. To say "in the recent few decades" is inappropriate as few means "little" but "decades" means at least 20 years, which is not little. Each decade is composed of 10 years. So to say "The correct term would have been "in the recent decades..." if you want to use the plural form of the time reference. This is one of the reasons why your prompt restatement is incorrect to a certain extent. The more appropriate paraphrase would have been:  
  
*There has been a recent development of stay at home dads in opposition to stay at home moms. These days, it is not uncommon to have mothers participating in the workplace. This essay will illustrate a few reasons as to why this has occurred. It will also present a discussion as to why this is a positive development.*  
  
Stick to just representing your understanding of the prompt without adding exaggerated information. You just need to state the facts, without adding information not in the original prompt. If it isn't in the original presentation, then don't mention it because it can change the slant and tone of discussion, which, in the scoring consideration, could be a negative for your TA score.  
  
All of your discussions are not accurately developed. You have gone over the maximum 5 sentence word count throughout the body of your presentations because you tried to discuss 2 reasons per paragraph when the sentence allotment is only good for one fully explained and supported reason. When you try to discuss more than one topic per paragraph, you will end up adversely affecting your C&C score which requires a completely developed, and explained thought process. The score for the discussion will not come from the number of reasons but rather, the clarity and quality of your explanation.  
  
Presenting less than 5 paragraphs will also reduce your score in the overall terms of TA, GRA, C&C, and LR considerations. Your aim in this essay is to prove that you can appropriately discuss a topic within a given paragraph requirement, based on specific directions, and in proper English. You have some good discussions in this essay but you are not appropriately presenting it to the reader. Just remember the basic rules for the format:  
  
1. Don't include information in the paraphrase that isn't in the original prompt  
2. 5 paragraphs  
3. 3-5 sentences per paragraph  
4. Make sure you write in coherent English  
5. Avoid run-on sentences  
  
I made a reference to run on sentences because your body paragraphs are overly long and separated by commas when your separate sentence ideas should have been presented in individual sentences within the paragraph. All connected information should be in single sentence presentations that represent either simple or complex sentences. Don't confuse complex sentences with run on sentences because they are not the same. Run ons just string together a series of ideas that eventually stop making sense. That is not how you develop a complex sentence. A complex sentence is composed of an independent and dependent clause. Just one of each, not a series of separate ideas that are forcing themselves to be connected when they should not be connected in the presentation.  
  
This is a good start. You have room for improvement. I believe that you can do it provided you always apply the corrections that you will be given during your practice tests.