Question

rivalry means :
the act of breaking up
the formal act of proclaiming; giving public notice
the act of holding tightly
the act of competing as for profit or a prize

Explanation:

The word "rivalry" is related to competition. Among the options, "the act of competing as for profit or a prize" aligns with the meaning of rivalry. The other options: "the act of breaking up" (related to separation), "the formal act of proclaiming; giving public notice" (proclamation), and "the act of holding tightly" (grasping) do not match the meaning of rivalry.

Answer:

the act of competing as for profit or a prize