Mark should invest in safe and readily available that is: C. a savings account.
<h3>What is a savings account?</h3>
A savings account can be defined as a type of account that is held by an accountholder, which avails him or her an opportunity to deposit and withdraw money while providing principal security with a modest interest rate.
This ultimately implies that, the money invested in a savings account is safe and readily available to an accountholder such as Mark.
OK so judging from the options given the best answer will be option B. because by suffering and going on with life you are living for him and that brings you one step closer to heaven because you are following his plan.