Correct Answer: 58%

Solution : Let the total number of employees be 100.
70% are males in office = 70
70% of males voted for anuj = $\frac{70}{100}\times70 = 49$
$\therefore$ Number of females = 100 – 70 = 30
30% of females voted for anuj = $\frac{30}{100}\times30 = 9$
People voted for Anuj = 49 + 9 = 58
$\therefore$ Required percentage $=\frac{\text{People who voted }}{\text{Total employees}}\times100=\frac{58}{100}\times100= 58\%$
Hence, the correct answer is 58%.