Answer:
The correct answer is option D.
Explanation:
All the cations given belong to the group-1 cation and will give precipitate of their respective chlorides when HCl is added to their aqueous solution.




All the precipitates are insoluble in cold water but out of all these only lead(II) chloride is soluble in warm water.
This is used for multiple scientists can perform the experiment and they can compare results.
Hope This Helps! :D
Answer:
B: Igneous, C: Metamorphic, D: Sedimentary
Explanation:
Sorry, i dont know A