QUESTION $1($Engineering contracts and law$)$John is a recent graduate with an advanced diploma in engineering and has been actively seekingjob opportunities in his field. He receives an email from XYZ Engineering Company, which reads:"Dear John,We are impressed with your qualifications and experience and would like to offer you a position asa Junior Engineer at XYZ Engineering Company. The terms of the offer include a starting salary ofR$350,000$ per annum, full health benefits, and opportunities for career advancement within ourcompany. If you accept this offer, please reply to this email with your acceptance.Sincerely, $[$HR Manager$]"1\mathrm{.}1.$ Assess the validity of the above offer in accordance with the law of contract principles. $(10)1\mathrm{.}2.$ Conclude on whether the offer is valid or not.