Final answer:
The correct answer is A) 44, indicating that there are 44 senators from the D party in the national senate.
Step-by-step explanation:
The student's question pertains to the composition of a country's national senate and the number of senators belonging to a specific political party. In this scenario, there are 100 members in the national senate, 44 of which belong to the D party and 56 to the R party.
The correct answer to the question, 'How many D senators are there?' is A) 44. This means that within the senate, 44 members are from the D party.