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# "Does using plural form for singular object make sense?" is correct.

"Do" or "Does" is used at the beginning of an affirmative sentence to form a simple present tense question. "Does" is the third person form of "do". 

e.g. "[It] makes sense." becomes "Does [it] make sense?"

You would use "do" for direct subjects, such as I, you, we or they. You use "does" for indirect subjects, such as he, she, it or that. 

For example: 

| Do/Does | Subject | Verb | Predicate |
| - | - | - | - |
| Do | I | make | sense? |
| Do | you | understand | me? |
| Does | this | help | you? |
| Does | it | make | sense? |

"Is" can be used to form a present tense question about a single or uncountable noun, where you would use "are" for a plural noun. Or to make an affirmative statement about something.

For example: 

**Questions**
| Is/Are | Subject(s) | Object(s) |
| - | - | - |
| Is | This | a fun grammar fact? |
| Is | the answer| interesting? |
| Are | questions | useful learning tools. |
| Are | There | different ways to form a sentence? |
| Is | it | making sense? |

**Statements**
| Subject | Is/Are | Object |
| - | - | - |
| This | is | a fun grammar fact. |
| The answer | is | interesting. |
| Questions | are | useful learning tools. |
| There | are | different ways to form a sentence. |
| It | is | making sense. |