Answer:
A.Better
Explanation:
Better in this sentence is referred to the word must or "have to" therefore, the correct grammar is indeed A.
<span>With the Republican cause all but lost, its leaders attempted to negotiate a peace, but Franco refused. On March 28, 1939, the victorious Nationalists entered Madrid in triumph, and the Spanish Civil War came to an end. Up to a million lives were lost in the conflict, the most devastating in Spanish history.</span>
