sorry option 3 is correct ........ we can get 1101 in 4th option but in 3rd i am not getting the 1101 string . so option 4 is wrong ,option 3 is correct.

for solving these type of question you have to check each options here (*) represent repetition that means (10)*= 101010101010..... and (+) corresponds to OR that is (1+0)= 1 or 0 so now take each option and try to expand it take an example 110*(0+1) in this when we expand we get 1100 or 1101 here we see that 1101 belongs to the given set so this option is not correct like wise we will check the other option. and for 4th option we will not the 1101 string because on expanding we get 00110... therefore 4th option is correct