subject verb agreement

The second. The sentence has two subjects (character and conduct") and therefore the verb is plural.

Imagine that the subjects are people instead of abstract nouns. You would know straight away that "Jack and John is good" was wrong.

Hi bubu. Hi syntinen, what if wrote the sentence like this,

His character, and conduct are good.

I mean which is the right, comma or without after and?

Thanks

Hi, bubu. Welcome to A2K. There are some compound nouns that act as the subject of a sentence, but are considered singular, for example, ham and eggs can be treated as one item and take a singular verb.

Letty: Yes, I agree that I was being a bit simplistic. Certainly as a cooked dish "ham and eggs" is effectively a single entity, ham-and-eggs, as it were, so "ham and eggs is my favourite breakfast" is acceptable.

Hi, navigator - no, there is no possible function for a comma in there. It breaks the sentence up into two incomplete clauses, neither of which is functional.