Topic: Group verb,

Best Answer Explained in Below-:

The correct answer to the question is actually **B) fill out**, not A) fill up.

The phrase "fill out a form" is the standard expression used in English to mean completing a form by providing necessary information. This phrase is commonly used in administrative contexts where individuals need to supply details such as their name, contact information, and other relevant data for purposes like joining a club, applying for a job, or registering for an event.

In contrast, "fill up" generally refers to making something full, such as filling a gas tank or a container with liquid. It does not appropriately convey the action of completing documentation. Likewise, "fill into" is not a recognized phrase in English, and "fill over" does not have a relevant meaning in this context.

Therefore, the appropriate phrase to complete the sentence accurately is "fill out a form," making B) fill out the correct answer for expressing the action of providing information requested on a form to be sent to the secretary.