Round this number to the nearest million

135,458,267

1,000,000 is million
to round look at hundred thousand place or 100,000
see number before million (after comma)

if it is greater than or equal to 5, add 1 to current value of million and say all after is 0
if less than 5 then leave million value as is and make after 0

135,458,267
hundred thousand value is 4
4<5
135,000,000

It’s either a or c as the answer.