<u> a) The establishment of assemblies</u>
<u> b) The abandonment of past customs</u>
<u> d) A search for knowledge to strengthen imperial rule</u>
The 1868 Charter Oath was a short and public document consisting of five articles. It was enacted by the emperor Meiji after the overthrow of the Tokugawa shogunate, and it started the so-called Modernization of the Meiji government.
Article 1 established deliberative assemblies on an extensive scale, and that all governmental matters shall be determined by public discussion (Option a).
Article 4 stated that “Evil customs of the past shall be discontinued, and new customs shall be based on the just laws of nature.” (Option b).
And article 5 established a search for knowledge to strengthen imperial rule (Option d).