House members are unable to offer amendments to a bill from the floor when this is adopted,

a private bills.

c. lobbyists

b. appropriations,

d the closed rule.

The Closed rule - Eliminates the opportunity to amend the bill on the floor, except under unanimous consent.

Option d

Explanation:

A closed rule never allows the members of Congress from presenting the amendments to a bill from the floor. This rule is effectively removing the opportunity to think about the amendments other than those reported by the committee reporting the bill.

The congress members will adapt to these kinds of rules to protect the constitution and safeguard the unfair laws to be made amendments. They have structured rules to be followed before going into this kind of rules. By this way the democracy is maintained in the society by an elected member of the society.