Short answer: The pronoun "that" precedes details about the noun that are essential, while the pronoun "which" precedes those that are non-essential or can be eliminated without changing the meaning of the sentence.
Explanation:
In grammar, the function of "which" and "that" is to precede or introduce clauses, especially those that provide information about the noun. Additionally, these two words differ slightly on their function because they introduce specific types of clauses.
 Indeed, the use of "that" shows the information introduced is essential or cannot be eliminated as in the sentence "My sister that is living in Europe get married" because the detail "is living in Europe" is essential to define "My sister". This does not occur with "which" because this precedes information that can be eliminated or it is not essential as in "My car, which is brand-new, just broke down" because in this sentence the key information is that the car broke down.
 
        
             
        
        
        
Answer:
All the people in the boat are married and there is not a single person there that is single.
Explanation:
Hope it helps and have a great day! =D
~sunshine~
 
        
             
        
        
        
1.)appointment 
2.)assignment 
3.)enjoyment
4.) i dont understand this 
5.)replacement 
6.) information 
7.) decision 
8.) description 
9.) multiplication 
10.) i cant see the word for this one
        
             
        
        
        
The Burnell children are gifted an elaborate dollhouse by a friend of the family who once stayed with them. They immediately fall in love with the dollhouse, and Kezia especially enjoys the little lamp which sits on one of its tables. When they next go to school, the Burnell children brag left and right about the dollhouse, and they get their entire class's attention. They are allowed to bring any two classmates per day by the house to look at the dollhouse, but they cannot bring the Kelvey children, who come from a family so poor even their teacher treats them differently. Kezia disobeys this rule, and brings the Kelveys by to look at the dollhouse, but she is discovered by her aunt, and the Kelveys are quickly shooed away
 
        
             
        
        
        
It would be it is a primary subject in the story that helps understand the hidden motives of the main character.