Answer:Option(a) is correct option
Step-by-step explanation:
According to the question, agreement between Al and CPA firm members suggests that Al cannot practice accounting under 20 miles of Redwood city for two years.
Even after being under contract conditions,Al tends to attend his accounting clients on weekends in his home situated in Redwood city.He is considered to be violating agreement terms because even though he is attending clients on weekends and in unofficial area ,he is still carrying out his accounting practice under 20 miles of Redwood city.Thus, sales agreement is getting breached by Al.
Other options are incorrect because two year period for refrain is not long as per agreement, agreement is not invalid and neither illegal because of public policy.Thus, the correct option is option(a).