Answer:
submit to
Explanation:
The verb, 'abide' as used in the sentence above implies obedience to the rules and regulations of an authority. The authority in this case is grandma. While in grandma's house she might have do's and don'ts that she expects her grandchildren to heed to. For example, she might expect them to do the dishes after eating. If the grandchildren obey those rules, then grandma will be happy with them. But if they disobey and flout the rules, grandma will be unhappy with them.
Citizens of a nation are also to abide by the rules and regulations guiding their society.
