Which pronoun in the sentence has no specific antecedent

Read the passage. (1) the first skateboard was constructed of old roller-skate wheels attached to a piece of wood. (2) improvements were made to the skateboard in 1959. (3) the year that the first commercially made skateboard appeared. (4) soon after, skateboarding began to grow in popularity. (5) in 1963, skateboard manufacturers formed the first professional skateboarding team. (6) that same year, the first organized skateboard competition took place, in california. which is the most effective way to correct the fragment in sentence 3? attach the fragment to sentence 4. attach the fragment to sentence 2. insert the phrase in the united states to the end of the fragment. insert the verb had before the verb appeared.

In january 2014 and i started 1 million pennies project she put donation jars in school and shops and set up a webpage to of said donations online her gold was to collect 1 million pennies or 1000 chandra’s planned to give the money to a group called growing food for the group plant gardens and deliver the products it grows to people in need

Answer 7th question pls asap i need