Answer
b. sporophyte
Work Step by Step
Ulva has an alternation-of-life generation life cycle similar to that of plants. It has three stages. Sporophyte which is a diploid generation, meiosis, and gametophyte which is haploid generation are part of the cycle. Therefore, sporophyte is the diploid stage in the life cycle of an Ulva. The correct answer is c. sporophyte.