Answer:
A: gerund
Step-by-step explanation:
The word wishing in the sentence is a gerund used as the subject of the sentence. A gerund is the ing form of the verb used as a noun , which can be a subject or an object . In the sentence They enjoy playing volleyball , playing is used as the object of the verb enjoy. It can also be used as the object of a preposition. Other uses of the verb + ing are as present participle and adjective.