Is this sentence correct?

Thanks!

///Building a good marriage and a successful career are quite a challenge for a working mother. ///

Aspara Gus… is quite a challenge …

Can you explain why "is" but not "are"? There are clearly two tasks mentioned.
To avoid the confusion on noun /verb agreement, I would say " Building a good marriage and a successful

It is the (singular) idea of combining the building of a good marriage with the building of a successful career that is the subject of the verb.

grammarfreakTo avoid the confusion on noun /verb agreement, I would say " Building a good marriage and a successful career prove to be quite a challenge for a working mother.

I'd use the singular verb 'prove' here for the reason I noted above.

grammarfreakThere are clearly two tasks mentioned.

Yes, but not two subjects. The noun phrases a good marriage and a successful career are not functioning as the subjects of the sentence but rather the direct objects of the verb building, forming a gerund phrase (building a good marriage and a successful career) functioning as the s

Aspara GusThe noun phrases a good marriage and a successful career are not functioning as the subjects of the sentence but rather the direct objects of the verb building, forming a gerund phrase (building a good marriage and a successful career) functioning as the sole subject of the sentence.

Thanks, that is explaine

grammarfreakBuilding a good marriage and running a company ....... quite challenging to a working mother.Now we have two objects with two verbs, how would you analyize it?

If you are talking about two separate activities, each of which us challenging, then it is better to say, "Building a good marriage and running a company are both quite challenging to

fivejedjonIf it is trying to do both things at once that is challenging, them "Building a good marriage and running a company is quite challenging to a working mother" is fine.

That is precisely the point I tried to make because it is nearly impossible for learners to tell the difference. So the confusion becomes a question as to when to use singular and when

fivejedjon"Building a good marriage and running a company are both quite challenging to a working mother"

This works. I think I would do something like this: Building a good marriage and running a company are challenging tasks…

Using just the plural verb sounds awkward, although I can’t find any