Right option is (a) \(\frac{x}{1!}+\frac{x^3}{3!}+\frac{x^5}{5!}+…..\infty\)
The best I can explain: We know the Taylor series does not change the polynomial. Hence, be the polynomial centered at 5 or anywhere else would yield the same polynomial. In this case the polynomial centered at 0 has to be equal to the polynomial centered at 5.