Question

what type of clothes do you wear in different seasons like aummer, winter and rainy season? what are they made of?​

Answer 1

$\huge{\underline{\mathtt{\red{A}\pink{n}\green{s}\blue{w}\purple{e}\orange{r}\red{♡}\pink{~}}}}$

No, as you said earlier, "responsibility" is singualr, so the person holding that position has only one responsibility or whatever he does is considered as one concept, responsibility, but "responsibilities" is plural and the person has more than one responsibility.