Answer
B. Spell checker
Explanation
Spell checker is a program designed to identify misspelled words and notify the writer about the mistake. The programs can further auto correct the word or allow the writer to choose from various corrections of the word. In Microsoft, a red underline appears on the misspelled word to display the error.
D is the answer, unlimited supply is NOT a characteristic of money
Messengers delivered letters because they had No Postal system
the net charge of an ion is non-zero due to its total number of electrons being unequal to its total number of protons.
Answer:
North. I had a similar question to that just different names.
Explanation: