Question

find the relative clause. if it is nonrestrictive, set it off with commas. if it is restrictive, submit the text without making any changes.

vincent who is adept at repairing broken electronics refused to disassemble and inspect his sisters glitchy laptop; instead, he advised her to buy a new one.

Explanation:

The clause "who is adept at repairing broken electronics" provides extra, non-essential information about Vincent (it does not define which Vincent is being referred to, as Vincent is a specific named individual). This makes it a nonrestrictive relative clause, so it needs to be set off with commas.

Answer:

Vincent, who is adept at repairing broken electronics, refused to disassemble and inspect his sister's glitchy laptop; instead, he advised her to buy a new one.