Correct option is A
The correct option to fill in the blank is "magnetic."
Explanation:
· Venus, being a planet, lacks a
magnetic field, which is a crucial planetary characteristic.
·
A "magnetic field" refers to the invisible force field surrounding a planet due to its core’s activity.
· The other options are unrelated to planetary attributes.
Example:
Earth's
magnetic field protects it from harmful solar radiation.
Incorrect Options:
·
(b) Musicological: Related to the study of music
(संगीत विज्ञान से संबंधित)
·
(c) Pedagogic: Related to teaching
(शिक्षण से संबंधित)
·
(d) Graphological: Related to handwriting analysis
(हस्तलेखन अध्ययन से संबंधित)