Answer:
As we strive to improve conversations about race, racism, and racial justice in this country, the environment in which we’re speaking seems to be constantly shifting, which shows that these conversations are more important than ever. We’ve put together some advice on finding entry points based on research, experience, and the input of partners from around the country. This is by no means a complete list, but it is a starting point for moving these discussions forward.
Please note that while there are many reasons to communicate with various audiences about racial justice issues, this memo focuses on messaging with the primary goal of persuading them toward action. There are many times when people need to communicate their anger, frustration, and pain to the world and to speak truth to power. Doing so may not always be persuasive, but that obviously doesn’t make it any less important. Since we’re considering persuasion a priority goal in this memo, please consider the following advice through that lens.
Explanation:
 
        
             
        
        
        
Correct answer # 2: The world's nations must cooperate; one nation cannot solve the world's problems by itself.
When you connect two related independent clauses or sentences you use a semicolon. Both sentences should be completed grammarly writtend and with a connection. Make sure you do not write a capital letter after the semicolon, unless it is a proper name. 
Answer # 3 is incorrect as there is a capitalized word
Answer # 1 it is incorrect to use "for" as the sentence is grammarly completed
 
        
             
        
        
        
Answer:
They're going to the amusement park tomorrow.
Explanation:
The reason it's they're is because it's a contraction of they and are.
 
        
                    
             
        
        
        
Cave is a smaller section of a cavern. A song is a smaller part of a tune. Therefore, one is the bigger picture (second section) and the other is the smaller picture (first one) Hope this helps!