optional

Wearing a mask is optional in some countries.

Attending the meeting is optional, not mandatory.

Adding extra cheese is optional for the pizza.

Taking a break during work hours is optional.

Filling out the survey is optional but encouraged.

Buying insurance for the package is optional.

Including a cover letter with your resume is optional.

Choosing a dessert is optional at this restaurant.

Attending the after-party is optional for all guests.

Using a pen or pencil is optional for the exam.

Last year the Supreme Court made the Medicaid expansion optional.

And the other optional component here is the introduction.

152. The optional helicopter is adopted to help the optimistic helpless in the hell.

At my university, there is no division between compulsory and optional modules.

And let's see, the optional extra is the Tower of London.

Chocolate petit four, plus the optional cigar.

White beard and red clothes are optional.

31.the employment of pilot is optional (selective).

In the word " almond" the L is optional.

Getting to the summit is optional.