According to Mendel's law of dominance, which statement best describes the result of a cross between parents with genotypes Rr and Rr?

The dominant R (capital R) will be visibly present. However, the person is a carrier since they have a small r. Thus, any children will also be a carrier, if not solely having the recessive gene.

I'm sorry if my answer is confusing; it's been a long time since biology.

If you do a Punnet square with these genotypes, you should get one homozygous (RR) dominant, 2 heterozygous (Rr) and one homozygous recessive (rr).