निम्नलिखित वाक्य

Which of the following sets of letters will be placed sequentially in the given alphabetical series to complete the given letter series?

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the combination of letters that when placed sequentially in the blanks of the given letter series will complete the series.

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the option that represents the letters that, when placed from left to right in the following blanks, will complete the letter-series.

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the correct combination of the letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

Select the combination of letter that when sequentially placed in the blanks of the given series will complete the series.

Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.

abc_dab_ _d_b_cdab_c_