'Indispensable' is a word which means :
Anot very important
Bdifficult to do without
Cnot useful
Dsomething that support life
Anot very important
Bdifficult to do without
Cnot useful
Dsomething that support life
Related Questions:
Choose the most suitable option to replace the highlighted part of the sentence:
hey are planning to go to abroad for training.