Explanation:

Bhaskara (Correct): Bhaskara II (c. 1114–1185), also known as Bhaskaracharya, was a prominent Indian mathematician and astronomer. He made significant contributions to algebra, particularly in solving indeterminate equations (like Pell's equation) and quadratic equations. His work 'Bijaganita' (Algebra) is a foundational text in the field. Brahmagupta: He (c. 598–c. 668 CE) also contributed to algebra, introducing zero and negative numbers, but Bhaskara II's contributions to advanced algebraic techniques are considered more profound. Lalla: He (c. 8th century CE) was an astronomer and mathematician known for his work in astronomy and trigonometry, not primarily algebra. Aryabhatta: He (c. 476–c. 550 CE) was significant for the place-value system, zero, and trigonometry, laying groundwork for math but not specializing in algebra as extensively as Bhaskara II.