Answer: they work with numbers and money
Step-by-step explanation:
Jason states that his mother is an accountant, then he later says "family of accountants. He also later states, "[his family are]... a sea of number experts from accountants to bookkeepers to bank managers." An accountant is a professional who manages financial records for an individual or company, therefore, the answer is B. they work with numbers and money.
I hope this helped ( /^ω^)/♪♪