Sentence examples similar to submission is optional from inspiring English sources

GRE score submission is now optional.

Submission of a portfolio is optional.

Submission of a draft is optional and students are not required to submit a draft in order to be eligible to apply by the final deadline.

Submission of other variables is optional and these data are sometimes absent.

A potential limitation to the biobank is that submission of tissue and blood samples is optional and this may impact the exploratory analyses performed in the future.

Sensitivity is optional.

Digitization is optional.

Sugar is optional.

Cutlery is optional.

(Power operation is optional).

Sex is optional".