The elderly man was a grandfather to seven youngsters and he never failed to spend time with them each and every weekend.

It said to fix the comma splice or fused sentence...how do u do that?

2 answers

1. You can separate the two clauses into two sentences by replacing the comma with a period.

2. You can replace the comma with a semi-colon.

3. You can replace the comma with a co-ordinating conjunction (and, but, or, for, yet, nor, or so).

4. You can replace the comma with a subordinating conjunction (e.g., after, although, before, unless, as, because, even though, if, since, until, when, while).
5. You can replace the comma with a semi-colon and transitional word (e.g., however, moreover, on the other hand, nevertheless, instead, also, therefore, consequently, otherwise, as a result).

The elderly man was a grandfather to seven youngsters, and he never failed to spend time with them each and every weekend.
Well, that original didn't have a comma splice in it. Here's an example of a comma splice:
The elderly man was a grandfather to seven youngsters, he never failed to spend time with them each and every weekend.

And here's an example of a fused sentence:
The elderly man was a grandfather to seven youngsters he never failed to spend time with them each and every weekend.

The ways to correct given by Anonymous above are correct.