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                              Q:
                           
                           
                                                      | A) KBr (S) | B) NaCl (L) | 
| C) K (S) | D) NaCl (Aq) | 
                              Answer:   D) NaCl (Aq)
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
Mixtures are combination of two or more substances physically which can be separated in to the original.
Matter can be breakdown into two categories.
1) Pure substances
2) Mixtures
Here in the given options, options A, B, C are pure substances as they are indicated as S & L in brackets. Option D) is an aqueous solution, that can be dissolved in water.
 
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