SPX Index is at or below 1410 at expiration
Buy 1 SPX 1410 Call at $34
Say the SPX index did not move as anticipated, but instead declined with the exercise settlement value at or at any point below the $1410 call strike price at expiration. The SPX 1410 call would expire out-of-the-money and with no value, so the investor would lose the total premium of $3,400 initially paid for the option. This would be the limited, maximum loss no matter how far SPX had declined.
By purchasing the call for $3,400, significantly less cash than the $140,000 underlying asset value when the position was established, the investor limited the investment capital at risk if the SPX index did not increase as anticipated. Now he still has the $136,600 cash balance of his original investment capital, plus interest if it had been invested in short-term interest bearing instruments, with which to make another investment decision.