The constant of universal gravitation is A)~9.81 m/s² B)~6.67 $\times$ 10^-11 N · m²/kg² C)~the gravitational attraction between the masses of any two bodies. D)~the ratio of the forces of attraction between any two masses. E)None of these is correct.

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The constant of universal gravitation is denoted by G and its value is approximately 6.67 x 10^-11 N · m^2/kg^2. It represents the proportionality factor between the gravitational force experienced by two objects and their masses, as described by Newton's law of universal gravitation. Choices A, C, D, and E are incorrect. Choice A represents the acceleration due to gravity on the Earth's surface, choice C describes the concept of gravitational attraction, choice D is not a well-defined quantity, and choice E is a general statement without any specificity to the constant of universal gravitation.

The Constant of Universal Gravitation Is A)~9 ×\times× 10-11 N · M2/kg2 C)~the Gravitational Attraction Between the \times

The Constant of Universal Gravitation Is
A)~9 $\times$ 10^-11 N · M²/kg²
C)~the Gravitational Attraction Between the \times